Question

The capacity of an elevator is either 25 children or 19 adults. If 10 children are currently in the​ elevator, how many adults can still get​ in?

Answer 1

For every 19 adults, there are 25 children;
For every 1 adult, there are
`(25)/(19) children`
1 adult is equivalent to 1.3157 children
After 10 children get on board, there is space for 15 children;
1 adult= 1.3157 children
? =15children
=
`(15*1)/(1.3157)`
= 11 adults