# Bella saw that 7 out of 11 people brought an umbrella to the beach. There were 99 people there. How many of them did not have a beach umbrella?

Mar 9, 2017

36

#### Explanation:

$\frac{99}{11} = 9$

multiply 9 by 7 (out of the 11).
$9 \cdot 7 = 63$

63 HAVE an Umbrella, so subtract 63 from 99:

$63 - 99 = 36$ people don't have an umbrella.