Question

ATOR

The capacity of an elevator is either 20 children or 15 adults. If
12 children are currently in the elevator, how many adults can still
get in?

Answer 1

6 adults

Explanation:

Let

x -----> the number of children

y ----> the number of adults

we know that

The ratio

`(x)/(y)=(20)/(15)`

so

using proportion

Find the value of y for x=(20-12)=8

`(20)/(15)=(8)/(y)\\\\y=15*8/20\\\\y=6`

therefore

6 adults