Question

The average age of three girls is 24 years if thier ages are in the ratio of 5:6:7.find the age of the youngest girl​

Answer 1

Step-by-step explanation:

first girl age =a

second girl=b

third girl=c

a+b+c/3=24

a+b+c=72

5a+6b+7c=72

Answer 2

3:5:7 

3*25=75 total age of the 3 boys.

3+5+7=15

75/15=5 multiplier for each of the factors 3,5 & 7

3*5=3*5=15 age of the youngest girl