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Bunuel
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Bunuel
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625×10^-3 * 8×10^-3
_____________
1×10^-2

625×8×10^-6×10^2

5000×10^-4

0.5

Sent from my SM-G925I using GMAT Club Forum mobile app
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marknassar
=625*8/10 = 50

Hi Marknassar,

You're missing the fact that there is a multiplication on the numerator, so there are 6 decimals after the decimal point on the numerator.
This way, you need to move the decimal point in the denominator to 6 decimals as well.

(0.625 x 0.008) / 0.01 = 625 x 8 / 10,000 = 5,000 / 10,000 = 5 / 10 = 0.5

Hope it helps!

Thanks! Ale :-)
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I've revised the question and solution, incorporating additional details for improved clarity. I trust this makes it more comprehensible.
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