SOLUTION: Mary is twice as old as John and half as old as Bob.in 22 years time, Bob will be twice as old as John. how old is Mary?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Mary is twice as old as John and half as old as Bob.in 22 years time, Bob will be twice as old as John. how old is Mary?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 445412: Mary is twice as old as John and half as old as Bob.in 22 years time, Bob will be twice as old as John. how old is Mary?
Found 2 solutions by rwm, mananth:
Answer by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!
m=2j
m=b/2
(b+22)=2*(j+22)
b=44
j=11
m=22

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Mary =x
John= x/2 (because mary is twice Bob's age)
Bob = 2x ( mary is 1/2 John's age)
After 22 years
Bob = 2x+22
John = x/2 + 22
2x+22= 2(x/2+22)
2x+22=x+44
2x-x=44-22
x=22 Mary's age