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A machine at the golf ball factory can produce 16 golf balls in 5 minutes. If several of these machines work...

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by AAPL » Tue Jul 21, 2020 12:01 pm

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Princeton Review

A machine at the golf ball factory can produce 16 golf balls in 5 minutes. If several of these machines work independently and each machine performs at the same rate, how many machines are needed to produce 32 golf balls per minute?

A. 3
B. 6
C. 8
D. 10
E. 13

OA D
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Re: A machine at the golf ball factory can produce 16 golf balls in 5 minutes. If several of these machines work...

by Brent@GMATPrepNow » Wed Jul 22, 2020 6:25 am
AAPL wrote: ↑
Tue Jul 21, 2020 12:01 pm
 Princeton Review

A machine at the golf ball factory can produce 16 golf balls in 5 minutes. If several of these machines work independently and each machine performs at the same rate, how many machines are needed to produce 32 golf balls per minute?

A. 3
B. 6
C. 8
D. 10
E. 13

OA D
Let's answer the question in steps...

GIVEN: 1 machine produces 16 golf balls in 5 minutes.
So, 1 machine produces 16/5 golf balls in 1 minute [if we have 1/5 the time, then the output is 1/5 as much]
So, 5 machines produce 16 golf balls in 1 minute [if we have 5 times the number of machines, then the output is 5 times as much]
So, 10 machines produce 32 golf balls in 1 minute [if we double the number of machines, then the output is doubled]

Answer: D

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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