Question

A bookstore had `60` copies of a magazine. yesterday, it sold `1/3` of them. today, it sold `3/4` of what remained how many copies has the bookstore have left?

Answer 1

`15` copies

Explanation:

"Of" indicates multiplication.

To find `1/3` of `60` magazines, multiply the two numbers.

`1/3*60/1=1/cancel(3)*(20*cancel(3))/1=20`

To find `3/4` of `20`, multiply the two numbers.

`3/4*20/1=3/cancel(4)*(5*cancel(4))/1=15`