16Hit1600
Advanced MathMediumThree doublings from 60

Advanced Math practice question

A quantity of 60 doubles every 3 hours. What is the quantity after 9 hours?

Answer: 480

Three doublings: 60 → 120 → 240 → 480.

Common wrong answers

If you answered 180
180 adds 60 twice, or triples.
If you answered 240
240 is after 6 hours.
If you answered 360
360 multiplies 60 by 6.

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