Question

the ratio of avarage ages of three people and other two among five is 9:7.the difference of ages is 12.find avarage of five people​

Answer 1

Answer:

Step-by-step explanation:

3 peoples age=9x

2 peoples age=7x

Diff age is 12 years

i.e, 9x-7x=12

2x=12

1x=6

9(6)=54

7(6)=42

54+42=96

Avg of 5 members is 96/5=19.2