Work/Rate Problems

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Work/Rate Problems

by swerve » Thu Mar 05, 2020 1:43 am

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A certain machine produces 1,000 units of product \(P\) per hour. Working continuously at this constant rate, this machine will produce how many units of product \(P\) in 7 days?

A. 7,000
B. 24,000
C. 40,000
D. 100,000
E. 168,000

The OA is E

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Re: Work/Rate Problems

by jbryant62 » Thu Mar 05, 2020 6:45 am
swerve wrote:
Thu Mar 05, 2020 1:43 am
A certain machine produces 1,000 units of product \(P\) per hour. Working continuously at this constant rate, this machine will produce how many units of product \(P\) in 7 days?

A. 7,000
B. 24,000
C. 40,000
D. 100,000
E. 168,000

The OA is E

Source: GMAT Prep
Hello,

There are 24hrs in a day and the machine works for 7 days. 24*7=168 hrs. Since the machine produces 1000 a hour, 168*1000= 168,000 E

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Re: Work/Rate Problems

by Brent@GMATPrepNow » Thu Mar 05, 2020 12:11 pm
swerve wrote:
Thu Mar 05, 2020 1:43 am
A certain machine produces 1,000 units of product \(P\) per hour. Working continuously at this constant rate, this machine will produce how many units of product \(P\) in 7 days?

A. 7,000
B. 24,000
C. 40,000
D. 100,000
E. 168,000

The OA is E

Source: GMAT Prep

A certain machine produces 1,000 units in 1 hour
So, the machine produces 24,000 units in 24 hours
In other words, the machine produces 24,000 units in 1 DAY
So, the machine produces (24,000)(7) units in 7 DAYS

(20,000)(7) = 140,000
So, (24,000)(7) = some number greater than 140,000

Answer: E

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Brent Hanneson - Creator of GMATPrepNow.com
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Re: Work/Rate Problems

by Scott@TargetTestPrep » Sat Mar 07, 2020 6:31 am
swerve wrote:
Thu Mar 05, 2020 1:43 am
A certain machine produces 1,000 units of product \(P\) per hour. Working continuously at this constant rate, this machine will produce how many units of product \(P\) in 7 days?

A. 7,000
B. 24,000
C. 40,000
D. 100,000
E. 168,000

The OA is E

Source: GMAT Prep
Since there are 24 hours in a day, the machine can produce 1000 x 24 x 7 = 168,000 units of product P in 7 days.

Answer: E

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