Question

A stack of sixty cards is placed next to a ruler, and the height of stack is measured to be 3 /8 of an inch. How thick is one card?

Answer 1

1/160 of an inch.

Explanation:

That would be 3/8 divided by 60.

= 3/8 / 60.

Inverting the 60 we get

3/8 * 1/60

= 3 / 480

= 1/160 of an inch (answer).