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A machine, working at a constant rate, manufactures 36 staplers in 28 minutes. How many staplers does it make in 1 hr 45

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A machine, working at a constant rate, manufactures 36 staplers in 28 minutes. How many staplers does it make in 1 hr 45

by Vincen » Sat Jan 23, 2021 6:34 am

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A machine, working at a constant rate, manufactures 36 staplers in 28 minutes. How many staplers does it make in 1 hr 45 min?

A. 125
B. 128
C. 135
D. 144
E. 150

Answer: C

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Re: A machine, working at a constant rate, manufactures 36 staplers in 28 minutes. How many staplers does it make in 1 h

by Scott@TargetTestPrep » Tue Feb 09, 2021 5:54 am
Vincen wrote: ↑
Sat Jan 23, 2021 6:34 am
 A machine, working at a constant rate, manufactures 36 staplers in 28 minutes. How many staplers does it make in 1 hr 45 min?

A. 125
B. 128
C. 135
D. 144
E. 150

Answer: C

Solution:

We can set up the following proportion, where x is the number of staplers the machine can produce in 1 hr 45 min, or 105 minutes:

36/28 = x/105

9/7 = x/105

7x = 945

x = 135

Answer: C

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