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?

Correct answer marked below

7,000

24,000

40,000

100,000

168,000

Correct

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Comments

JazminSep 19

Wait, I got 168,000 but isn't that just 24*7*1000? That seems too easy for a GMAT question. Am I missing something?

SeharOct 3

Nope, that's it. Sometimes they throw in a gimme to test if you can convert days to hours. Don't overthink it.

SomaliSep 21

Yeah I did the same thing. I think the trap is people who forget the 24 and just do 7*1000 = 7,000.

AbhiApr 28

Thanks, I was staring at 24,000 for a second because I only did 24 hours. Forgot it was 7 days not 1 day lol

Akshith4d ago

Can someone explain why we multiply by 24 and not just use 7 days directly? I always mess up these unit conversions.

Abdullah3d ago

Because the rate is given in units per HOUR. You need to match the time unit, so 7 days = 7*24 = 168 hours. Then 168*1000.

JuliaJun 19

This is refreshingly straightforward after the last few rate problems. Just 7 days * 24 hours = 168 hours, then * 1000. Answer E.

What this question tests

Your ability to combine individual work rates, usually by working with the fraction of a job completed per unit of time.

Adding the times instead of the rates, or forgetting to take the reciprocal when combining rates.

A certain machine produces 1,0001,0001,000 units of product P per hour. Working continuously at this constant rate, this machine will produce how many units of product P in 777 days?