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

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... 

Answer 2

Step-by-step explanation:

5 : 6 : 7

3 × 24 = 72 total age of the 3 girls

5 + 6 + 7 = 18

72 ÷ 18 = 4

5 × 4 = 20 age of the youngest girl.