Question

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

Answer 1

36 people of them did not have a beach umbrella.

Explanation:

Proportion states that the two ratios or fractions are equal.

Let x represents the number of people did not have a beach umbrella.

As per the statement:

Bella saw that 7 : 11 people brought an umbrella to the beach.

Out of 11 people, only 7 people brought an Umbrella to the beach.

Remaining people did not brought an Umbrella to the beach = 11 -7 = 4 people

It is also given that there were 99 people there.

then by definition of proportion:

`(4)/(11) = (x)/(99)`

By cross multiply we have;

`99 * 4 = 11x`

Divide both sides by 11 we get;

`x = 9 * 4`

Simplify:

x = 36 people.

Therefore, 36 people of them did not have a beach umbrella.