SOLUTION: Tommy is twice as old as Billy. If in two years the sum of their age is 79. How old is Tommy and Billy?

Question 628267: Tommy is twice as old as Billy. If in two years the sum of their age is 79. How old is Tommy and Billy?
Answer by MrLarame(2) (Show Source): You can put this solution on YOUR website!
If Tommy is twice as old as Billy, then we can use variables to represent their ages like this:
B = Billy's Age
B * 2 = Tommy's Age
Then, if their two ages add up to be 2 years less than 79, we can write the whole question in "math language" as:
B + B*2 = 79 - 2
Now we simplify, since 1B added to 2B's is 3B's, we get:
3B = 77
If 3 B's is 77, then 1 B would be 1/3 of 77, or 77/3.
B (Billy's age) is 25 2/3 or 25 years and 8 mos.
Since Tommy is twice that old, his age is 50 years and 16 months or 51 years and 4 mos.
RELATED QUESTIONS
The Johnson family has three sons, Billy, Tommy and Bobby. Billy is as old as Tommy and... (answered by lwsshak3)

How old are they if tommy was twice as old as Eric and James is three-quarters the age of (answered by jorel1380)

Ana is twice as old as Billy. Billy is three times as old as Candy.If the sum of their... (answered by lwsshak3)

if tommy julie and linda's age all together is 64 and julie is twice as old as tommy and... (answered by josgarithmetic,advanced_Learner,ikleyn)

Haley is twice as old as billy. The sum of their ages is 36. How old is billy? How old is (answered by ReadingBoosters)

When Billy turned 14 years old, his father was 42 years old, which is three times Billy�s (answered by nrussell1945,Maths68)

Billy is twice as old as his son. In 10 years, the ratio of their age will be 3:5. find... (answered by checkley77)

Tommy is seven years older than Michael. In five years, Tommy will be twice as old is... (answered by jorel555)

bobby is four times as old as his son tommy. Charlie is two years older than his brother... (answered by Olasko)