Question

A school knows that 38% of its incoming students own a smart phone and a tablet. What percent of students who own a smart phone also own a tablet if 84% of students own a smart phone?

Answer 1

`45.2%`

Explanation:

84 out of every 100 students own a smartphone, of which 38 own both.

Then `38/84xx100%=45.2...%` of the smartphone owners own both.