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# Quant Question of the Day Chat

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Re: Quant Question of the Day Chat [#permalink]
Haffun wrote:
horrors live, I hope you have read this : ultimate-gma ... 44512.html

Can you please PM me the link unable to copy it through my mobile
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Re: Quant Question of the Day Chat [#permalink]
Guys, since these are back to back angle, X+y =180, use that to find X and Y with the given ratios of 2/3.
You will get X= 72 and Y=108.

Similarly find the values of X and Y for the new ration of 3/2.
(Tip: Since the ratio is just reversed from the earlier ratio, you will get X=108 and Y =72 now.)

So the amount of angle difference will be X2(108)- X1(72)= 36

Also, I think this will come in geometry. So it shouldnt come in GMAT Focus.
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Re: Quant Question of the Day Chat [#permalink]
horrorslive wrote:
Ignore the 9 it’s wrong 41- sqrt(12^2+ 15^2) +4 Used Pythagoras theorem since 12 and 15 can make a right angled triangle we can get the hypotenuse approx 19.21 and add 4 to it since the 5,5,4 make a rectangle. We get a 4

I used sqrt (16^2 + 15^2) to get to the actual distance.16=12+4. However, the OA says the actual distance is 15+12+4 since the 5miles right were taken only due to road blockage. The one without the road blockage is their actual distance.
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Re: Quant Question of the Day Chat [#permalink]
Haffun wrote:
I used sqrt (16^2 + 15^2) to get to the actual distance.16=12+4. However, the OA says the actual distance is 15+12+4 since the 5miles right were taken only due to road blockage. The one without the road blockage is their actual distance.

Can you send the link where you found this question or the image of it?
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Re: Quant Question of the Day Chat [#permalink]
I can’t send the link as it is a private one. I can send you the solution. It’s here

The topic is creating diagram for solving word problems
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Re: Quant Question of the Day Chat [#permalink]
 Data Sufficiency Butler: April 2024 April 1 DS 1 DS 2
­
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Re: Quant Question of the Day Chat [#permalink]
 Problem Solving Butler: April 2023 April 1 PS 1 PS 2

­
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Re: Quant Question of the Day Chat [#permalink]
Check out this tricky word problem with an easy solution:

https://gmatclub.com/forum/a-shoe-manuf ... l#p3378077
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Re: Quant Question of the Day Chat [#permalink]
if a b c d are integers and ac+ad+bc+bd=65 what is a+b+c+d

@Bunuel

@Nullbyte
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Re: Quant Question of the Day Chat [#permalink]
Can you please tell the values of abcd
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Re: Quant Question of the Day Chat [#permalink]
5*13=65, (a+b)(c+d)=5*13
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Re: Quant Question of the Day Chat [#permalink]
(ab+b)(c+d) = 65

(a+b)(c+d)=65 = 13*5 ==> 18

rd170905 wrote:
Can you please tell the values of abcd

Multiple values can satisfy that.

Is there any limitation on the sign of the integer ?
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Re: Quant Question of the Day Chat [#permalink]
What is the average of all the multiple of tens from 10 to 190 inclusive?
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Re: Quant Question of the Day Chat [#permalink]
HyatMahmud wrote:
What is the average of all the multiple of tens from 10 to 190 inclusive?

First we need to find the no. of multiples of 10 from 10 to 190 which is 19 Then, the sum of nos. of multiples of 10 from 10 to 190 which is 1900. So, the average would be 100.
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Re: Quant Question of the Day Chat [#permalink]
poojaarora1818 wrote:
First we need to find the no. of multiples of 10 from 10 to 190 which is 19 Then, the sum of nos. of multiples of 10 from 10 to 190 which is 1900. So, the average would be 100.

How did you arrive at 1900?
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Re: Quant Question of the Day Chat [#permalink]
Hey Guys,
How do we calculate Standard deviation quickly and compare 2 sets of integer for lower or higher standard deviations quickly?
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Re: Quant Question of the Day Chat [#permalink]
rd170905 wrote:
@Nullbyte

Are you sure the question just mentions they are integers and not "positive integers"?
Because if they are just integers then (a+b)(c+d) could be 1 and 65 or - 1 and - 65
Re: Quant Question of the Day Chat [#permalink]
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