SOLUTION: Billy is twice as old as his son. In 10 years, the ratio of their age will be 3:5. find their age.
Algebra.Com
Question 164128: Billy is twice as old as his son. In 10 years, the ratio of their age will be 3:5. find their age.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
(x+10)/(2x+10)=3/5
3(2x+10)=5(x+10)
6x+30=5x+50
6x-5x=50-30
x=20 the son'e age now.
2*20=40 dads age now.
Proof:
(20+10)/(40+10)=3/5
30/50=3/5
3/5=3/5
RELATED QUESTIONS
Billy is twice as old as his son. In 10 years, the ratio of their ages will be 3:5. Find... (answered by mbarugel)
Billy is twice as old as his son. In 10 years, the ratio of their ages will be 3:5. Find... (answered by mananth)
Billy is twice as old as his son. in 10 years, the ratio of their ages will be 3:5. find... (answered by ewatrrr,sachi)
John is twice as old as his son. In 42 years, the ratio of their age will be 4:3. what... (answered by drj)
if john is twice as old as his son in 20 years the ratio of their ages will be 4:3 what... (answered by ankor@dixie-net.com)
father age is 3 times as old as his son. in 10 years time,he will be double of his sons... (answered by stanbon)
In three years' time, a father will be three times as old as his son. If the ratio of... (answered by ikleyn)
Age Problem
A father is 25 years older than his son. In 10 years, he will be twice as... (answered by josgarithmetic)
mr c is twice as old as his son,in 42 years the ratio of their ages will be4:3 what is... (answered by checkley77)