Jane makes toy bears. When she works with an assistant, she makes 80 percent more bears per week and works 10 percent fewer hours each week. Having an assistant increases Jane’s output of toy bears per hour by what percent?

A. 20%

B. 80%

C. 100%

D. 180%

E. 200%

In actual GMAT we should solve it by taking numbers.

Lets say Jane makes 100 bears in 10 hours

So in 1 hour Jane makes 10 bears

With assistant, Jane makes 100x1.8 = 180 bears in 10x0.9 = 9 hours

So in 1 hours Jane makes 180/9

...

]]>

Jane makes toy bears. When she works with an assistant, she makes 80 percent more bears per week and works 10 percent fewer hours each week. Having an assistant increases Jane’s output of toy bears per hour by what percent?

A. 20%

B. 80%

C. 100%

D. 180%

E. 200%

In actual GMAT we should solve it by taking numbers.

Lets say Jane makes 100 bears in 10 hours

So in 1 hour Jane makes 10 bears

With assistant, Jane makes 100x1.8 = 180 bears in 10x0.9 = 9 hours

So in 1 hours Jane makes 180/9

...]]>

For any right angled triangle the hypotenuse is the largest side and not only isosceles right?

Owing to the convention that the longest side is against the largest angle ?

Posted from my mobile device

Yes. The largest side is always against the largest angle. So, in any right triangle hypotenuse is the largest side.

]]>

For any right angled triangle the hypotenuse is the largest side and not only isosceles right?

Owing to the convention that the longest side is against the largest angle ?

Posted from my mobile device

Yes. The largest side is always against the largest angle. So, in any right triangle hypotenuse is the largest side.]]>

Bunuel wrote:

niteshwaghray wrote:

If a cube of side length 24 units is cut into 512 smaller cubes of equal dimensions, then what is the ratio of the combined surface area of the smaller cubes and the surface area of the original cube?

A. 1:48

B. 3:32

C. 8:1

D. 32:3

E. 48:1

A. 1:48

B. 3:32

C. 8:1

D. 32:3

E. 48:1

512 = 8^3, which means that a side of a large cube will be divided into 8 parts giving the side lengths of smaller cubes as 24/8 = 3.

The combined surface area of the smaller cubes = 512*(6*3^2);

The surface area of the original cube = 6*24^2 (number of

...

Attachments

cube.png [ 280.71 KiB | Viewed 34 times ]

]]>

Bunuel wrote:

niteshwaghray wrote:

If a cube of side length 24 units is cut into 512 smaller cubes of equal dimensions, then what is the ratio of the combined surface area of the smaller cubes and the surface area of the original cube?

A. 1:48

B. 3:32

C. 8:1

D. 32:3

E. 48:1

A. 1:48

B. 3:32

C. 8:1

D. 32:3

E. 48:1

512 = 8^3, which means that a side of a large cube will be divided into 8 parts giving the side lengths of smaller cubes as 24/8 = 3.

The combined surface area of the smaller cubes = 512*(6*3^2);

The surface area of the original cube = 6*24^2 (number of

...

Attachments

cube.png [ 280.71 KiB | Viewed 34 times ]

]]>

Is 12 a factor of x(y^2)?

1) X is a multiple of 24

2) Y is a multiple of 6

It should be mentioned in the stem that x and y are positive integers. Otherwise the answer cannot be D. Every GMAT divisibility question will tell you in advance that any unknowns represent positive integers (ALL GMAT divisibility questions are limited to positive integers only).

]]>

Is 12 a factor of x(y^2)?

1) X is a multiple of 24

2) Y is a multiple of 6

It should be mentioned in the stem that x and y are positive integers. Otherwise the answer cannot be D. Every GMAT divisibility question will tell you in advance that any unknowns represent positive integers (ALL GMAT divisibility questions are limited to positive integers only).]]>

Hence, Option A.

Explanation:

Logic : if we reduce the item price first and the increase the price of same item than the result is reduced price.

For example: Let the CP of an article be = 100

reduce = 10% = 90 (new price after decrease)

Increase = 10% (99 new price after increase )

Result = 100 - 99 = 1 % less.

Therefore answer will be less than $470. There is only one option (A).

]]>

Hence, Option A.

Explanation:

Logic : if we reduce the item price first and the increase the price of same item than the result is reduced price.

For example: Let the CP of an article be = 100

reduce = 10% = 90 (new price after decrease)

Increase = 10% (99 new price after increase )

Result = 100 - 99 = 1 % less.

Therefore answer will be less than $470. There is only one option (A).]]>

IMO answer is A, question is straight forward. Can someone post the OA?

Please refer to the original post, which says: The OA will be automatically revealed on Monday 29th of May 2017 10:04:06 PM Pacific Time Zone

]]>

IMO answer is A, question is straight forward. Can someone post the OA?

Please refer to the original post, which says: The OA will be automatically revealed on Monday 29th of May 2017 10:04:06 PM Pacific Time Zone ]]>

]]>

For con 2), from x=4p+1=1,5,9…., the remainder of x=1=12(0)+1

...

]]>

For con 2), from x=4p+1=1,5,9…., the remainder of x=1=12(0)+1

...]]>

A. 1/10

B. 1/9

C. 3/10

D. 3/15

E. 2/15

]]>

A. 1/10

B. 1/9

C. 3/10

D. 3/15

E. 2/15]]>

So hit and trial with a little common sense for me and $700 will be the answer. I believe a lot of arithmetic questions can be done with hit and trial but not all.

]]>

So hit and trial with a little common sense for me and $700 will be the answer. I believe a lot of arithmetic questions can be done with hit and trial but not all.]]>

SP = RO

But RO is the radius of circle

Hence SP = 2

]]>

SP = RO

But RO is the radius of circle

Hence SP = 2]]>

Would be great to know if anyone else has come across this question. Thanks!

]]>

Would be great to know if anyone else has come across this question. Thanks!]]>

Jan lives x floors above the ground floor of a highrise building. It takes her 30 seconds per floor to walk down the steps and 2 seconds per floor to ride the elevator. If it takes Jan the same amount of time to walk down the steps to the ground floor as to wait for the elevator for 7 minutes and ride down, then x equals

A) 4

B) 7

C) 14

D) 15

E) 16

x*(1/2)=7+x*(1/30)

x=15

D

]]>

Jan lives x floors above the ground floor of a highrise building. It takes her 30 seconds per floor to walk down the steps and 2 seconds per floor to ride the elevator. If it takes Jan the same amount of time to walk down the steps to the ground floor as to wait for the elevator for 7 minutes and ride down, then x equals

A) 4

B) 7

C) 14

D) 15

E) 16

x*(1/2)=7+x*(1/30)

x=15

D]]>

What is the shortest distance between the following 2 lines: x + y = 3 and 2x + 2y = 8?

(A) 0

(B) 1/4

(C) 1/2

(D) \(\frac{{\sqrt 2}}{2}\)

(E) \(\frac{{\sqrt 2}}{4}\)

Lets consider the points where Line 1 and Line 2 intersect the X and Y axes:

L1 : x + y = 3

=> y= -x + 3

Substitue x=0 to get y=3 and y=0 to get x=3.

So, the 2 points are (0,3) and (3,0).

Similarly for L2 : 2x+2y = 8

=> y = -x + 4

Points are (0,4) and (4,0).

Check, in the attached figure, both the lines are parallel to each other and

...

Attachments

IMG_20170524_113119.jpg [ 3.42 MiB | Viewed 20 times ]

]]>

What is the shortest distance between the following 2 lines: x + y = 3 and 2x + 2y = 8?

(A) 0

(B) 1/4

(C) 1/2

(D) \(\frac{{\sqrt 2}}{2}\)

(E) \(\frac{{\sqrt 2}}{4}\)

Lets consider the points where Line 1 and Line 2 intersect the X and Y axes:

L1 : x + y = 3

=> y= -x + 3

Substitue x=0 to get y=3 and y=0 to get x=3.

So, the 2 points are (0,3) and (3,0).

Similarly for L2 : 2x+2y = 8

=> y = -x + 4

Points are (0,4) and (4,0).

Check, in the attached figure, both the lines are parallel to each other and

...

Attachments

IMG_20170524_113119.jpg [ 3.42 MiB | Viewed 20 times ]

]]>

workout wrote:

yogirb8801 wrote:

Lake A has a duck population of 30 females and 36 males. Lake B’s duck population consists of the same ratio of females to males. If 6 new female ducks are added to Lake B and no other ducks are added or removed, the new total duck population of Lake B could be which of the following?

Though I got to the correct answer, I was slightly confused with the wording of the problem. "Lake B’s duck population consists of the same ratio of females to males" can be interpreted as 1:1 ratio

...

]]>

workout wrote:

yogirb8801 wrote:

Lake A has a duck population of 30 females and 36 males. Lake B’s duck population consists of the same ratio of females to males. If 6 new female ducks are added to Lake B and no other ducks are added or removed, the new total duck population of Lake B could be which of the following?

Though I got to the correct answer, I was slightly confused with the wording of the problem. "Lake B’s duck population consists of the same ratio of females to males" can be interpreted as 1:1 ratio

...]]>

The perimeter of a rectangular lot is 160 feet. What is the length of the lot?

(1) The length of the lot is three times the width.

(2) The area of the lot is 1200 square feet.

The question is not good.

From (2) we get that x = 20 and y = 60 OR x = 60 and y = 20. Author of the questions thinks that (2) is not sufficient because the length can be 20 as well as 60 butthe length of a rectangle is the measure of its longest side. So, the length is never smaller than the width. This mean that the

...

]]>

The perimeter of a rectangular lot is 160 feet. What is the length of the lot?

(1) The length of the lot is three times the width.

(2) The area of the lot is 1200 square feet.

The question is not good.

From (2) we get that x = 20 and y = 60 OR x = 60 and y = 20. Author of the questions thinks that (2) is not sufficient because the length can be 20 as well as 60 butthe length of a rectangle is the measure of its longest side. So, the length is never smaller than the width. This mean that the

...]]>

There is a typo in the question. Could someone please correct it? Thanks!

What typo are you ta;king about?

]]>

There is a typo in the question. Could someone please correct it? Thanks!

What typo are you ta;king about?]]>

For any positive integer n, n>1, the "length" of n is the number of positive primes (not necessarily distinct) whose product is n. For ex, the length of 50 is 3, since 50=2x5x5.

Which of the following integers has length 3 ?

A) 3

B) 15

C) 60

D) 64

E) 105

Questions about the same concept:

https://gmatclub.com/forum/for-any-inte ... 08124.htmlhttps://gmatclub.com/forum/for-any-inte ... 08124.html