Use a property of proportions that states that their reciprocals are equal if the two ratios are equal you get
x : 1
Answer:
34416
Step-by-step explanation:
.72(percentage) × 47800(people)
34416
Three thousand one hundred ninty-two
<u>Answer:</u>
11
<u>Step-by-step explanation:</u>
We are given the following expression and we are to solve it:

Simplifying both the fractions before adding them to make it easier to solve:
= 
= 
= 
Therefore, the answer to the given mathematical expression is 11.
Total ratio=9+11=20
number of girls=11/20*400
=220