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

Answer:

36 people of them did not have a beach umbrella.

Step-by-step 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:

$\frac{4}{11} = \frac{x}{99}$

By cross multiply we have;

$99 \times 4 = 11x$

Divide both sides by 11 we get;

$x = 9 \times 4$

Simplify:

x = 36 people.

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