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Mirko92
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GMAT Questions Chat Group 07 May 2024, 10:05
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Hey guys, if anyone is planning to subscribe to TTP we can both get 2 free weeks if you use my referral link: https://gmat.targettestprep.com/plans?r ... e=MTc4MTc4
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GMAT Questions Chat Group 07 May 2024, 10:05
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Got 32 as well. Agree with Harshit.
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Mirko92
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GMAT Questions Chat Group 07 May 2024, 10:08
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31.67, so 32 is the average
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ratpat
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GMAT Questions Chat Group 07 May 2024, 11:03
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Yes sorry 32. Calculation error.
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GMAT Questions Chat Group 07 May 2024, 11:42
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Hello everyone

Can you tell me if it’s allowed to use a calculator during the GMAT test? thank you
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sagnik1995
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GMAT Questions Chat Group 07 May 2024, 11:46
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Widad
Can you tell me if it’s allowed to use a calculator during the GMAT test? thank you
Only in data insights section
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GMAT Questions Chat Group 08 May 2024, 01:35
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Data Sufficiency Butler: May 2024
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GMAT Questions Chat Group 08 May 2024, 01:36
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GMAT Questions Chat Group 08 May 2024, 02:23
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Hi, sorry to bother but for the following question in practice exam (6), I have solved by isolating x ion the first equation and the and plugging it into the second, but is is very long sand tedious, i was wondering if there wasn’t another way ?

here is the question:

if 3x-2y = 32, and (3x)^1/2 - (2y)^1/2 = 4, what is the value of x-y ?

Sol:

4, 8, 10, 12, 14
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Bunuel
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GMAT Questions Chat Group 08 May 2024, 02:30
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Check here:
if-3x-2y-32-and-sqrt-3x-sqrt-2y-421168.html
Hope this helps.
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GMAT Questions Chat Group 08 May 2024, 06:22
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khaos3787
Hi, sorry to bother but for the following question in practice exam (6), I have solved by isolating x ion the first equation and the and plugging it into the second, but is is very long sand tedious, i was wondering if there wasn’t another way ? here is the question: if 3x-2y = 32, and (3x)^1/2 - (2y)^1/2 = 4, what is the value of x-y ? Sol: 4, 8, 10, 12, 14
bro there is a easy soln: in eqn 1. let 3x= a^2, 2y=b^2 then substitute value pf a-b =4, then solve for x ; x=12, y=2 x-y=10
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GMAT Questions Chat Group 08 May 2024, 15:10
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A marketing firm found that, of 800 computer users surveyed, 280 were not familiar with either Website A or Website B, 220 were familiar only with Website A, and for every 3 computer users who were familiar only with Website B, one was familiar with both websites. How many of the 800 computer users were familiar with both websites?

in here - either / or in the answer key is referred to as not familiar with both
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GMAT Questions Chat Group 08 May 2024, 18:30
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Hi!! I’m having troubles understanding this prep exam question
Pump A, pumping water at a constant rate, can fill a certain swimming pool in 6 hours. Pump B, pumping water at a constant rate, can fill the same pool in 4 hours. If both pumps begin filling the pool simultaneously when the pool is empty and pump B breaks down 1 hour after they begin filling the pool, how many hours will it take pump A alone to finish filling the pool?

A. 1 2/5
B. 2 1/3
C. 3 1/2
D. 4
E. 4 4/5

I don’t understand why the answer is C when
I’m using the TW=W1+W2
t-1/6+1/4=TW
4t-4+6=24
t=22/4=5 1/2
t-1=4 1/2
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GMAT Questions Chat Group 08 May 2024, 18:40
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Let’s take it like this :

Let the total capacity of the pool be 24 L

Pump A fills the pool in 6 hours.
So efficiency = 24/6 = 4L / hr

Pump B fills the pool in 4 hours.
So efficiency = 24/4 = 6L / hr

So when they both are operating together, total efficiency of 1 hour = 4 + 6 = 10 L / hr

For the 1st hour it will fill 10 L and 14 L is still empty.

After 1 hour Pump B will break down. So the efficiency is only 4L / hr i.e. the efficiency of Pump A.

So time taken by pump A alone to fill remaining pool = 14 / 4 = 3.5 hr
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GMAT Questions Chat Group 08 May 2024, 18:54
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andreanjikloh
Hi!! I’m having troubles understanding this prep exam question Pump A, pumping water at a constant rate, can fill a certain swimming pool in 6 hours. Pump B, pumping water at a constant rate, can fill the same pool in 4 hours. If both pumps begin filling the pool simultaneously when the pool is empty and pump B breaks down 1 hour after they begin filling the pool, how many hours will it take pump A alone to finish filling the pool? A. 1 2/5 B. 2 1/3 C. 3 1/2 D. 4 E. 4 4/5 I don’t understand why the answer is C when I’m using the TW=W1+W2 t-1/6+1/4=TW 4t-4+6=24 t=22/4=5 1/2 t-1=4 1/2
Why have you taken t-1 in first step... Let A work for t hours, so t/6 + ¼ = 1 will give t=9/2.
But we are looking for the time A pump works alone, so cut 1 hour from total as for initial one hour both were working together, so 9/2 -1 = 7/2 or 3.5
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GMAT Questions Chat Group 08 May 2024, 23:51
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andreanjikloh
Hi!! I’m having troubles understanding this prep exam question
Pump A, pumping water at a constant rate, can fill a certain swimming pool in 6 hours. Pump B, pumping water at a constant rate, can fill the same pool in 4 hours. If both pumps begin filling the pool simultaneously when the pool is empty and pump B breaks down 1 hour after they begin filling the pool, how many hours will it take pump A alone to finish filling the pool?

A. 1 2/5
B. 2 1/3
C. 3 1/2
D. 4
E. 4 4/5

I don’t understand why the answer is C when
I’m using the TW=W1+W2
t-1/6+1/4=TW
4t-4+6=24
t=22/4=5 1/2
t-1=4 1/2
­This question is discussed in detail here:

https://gmatclub.com/forum/pump-a-pumpi ... 27389.html

Hope this helps.
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Bunuel
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GMAT Questions Chat Group 09 May 2024, 00:20
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daszzling2000
A marketing firm found that, of 800 computer users surveyed, 280 were not familiar with either Website A or Website B, 220 were familiar only with Website A, and for every 3 computer users who were familiar only with Website B, one was familiar with both websites. How many of the 800 computer users were familiar with both websites?

in here - either / or in the answer key is referred to as not familiar with both
Yes, the phrase '280 were not familiar with either Website A or Website B' means that 280 people were not familiar with either of the websites, implying they were unfamiliar with both.

This question is discussed in detail here:

https://gmatclub.com/forum/a-marketing- ... 69783.html

Hope this helps.
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GMAT Questions Chat Group 09 May 2024, 00:41
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daszzling2000
A marketing firm found that, of 800 computer users surveyed, 280 were not familiar with either Website A or Website B, 220 were familiar only with Website A, and for every 3 computer users who were familiar only with Website B, one was familiar with both websites. How many of the 800 computer users were familiar with both websites? in here - either / or in the answer key is referred to as not familiar with both
is it 100?

its 75 got it
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BrahmaReddy
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GMAT Questions Chat Group 09 May 2024, 01:26
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daszzling2000
A marketing firm found that, of 800 computer users surveyed, 280 were not familiar with either Website A or Website B, 220 were familiar only with Website A, and for every 3 computer users who were familiar only with Website B, one was familiar with both websites. How many of the 800 computer users were familiar with both websites? in here - either / or in the answer key is referred to as not familiar with both
75 isn’t it?
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GMAT Questions Chat Group 09 May 2024, 01:29
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BrahmReddy
daszzling2000
A marketing firm found that, of 800 computer users surveyed, 280 were not familiar with either Website A or Website B, 220 were familiar only with Website A, and for every 3 computer users who were familiar only with Website B, one was familiar with both websites. How many of the 800 computer users were familiar with both websites? in here - either / or in the answer key is referred to as not familiar with both
75 isn’t it?
­
YES!


­This question is discussed in detail here:

https://gmatclub.com/forum/pump-a-pumpi ... 27389.html

Hope this helps.
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