Question 1024911
let henry's age be x,
John's age =10+x
Carol's age=3(10+x)=30+3x
but the sum of their ages is 140yrs,
Then,
x+30+3x+10+x=140
5x+40=140
5x=140-40
5x=100
x=20
hary's age is 20yrs
carol's age is 30+3(20)=90yrs
John;s age=10+20=30yrs