SOLUTION: Bob is 5 times the age of his daughter Jane. In 5 years time, Bob will be 3 times Jane's age. How old are they now?

Question 466523: Bob is 5 times the age of his daughter Jane. In 5 years time, Bob will be 3 times Jane's age. How old are they now?
Found 2 solutions by Earlsdon, MARIO OWHOLO:
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Let B = Bob's present age and J = his daughter Jane's present age.
1) "Bob is 5 times the age of his daughter Jane."
2) "In 5 year's time, Bob will be 3 times Jane's age."
Into equation 2), substitute from equation 1) and solve for J.
3) Simplify this.
4) Subtract 3J from both sides.
5) Subtract 5 from both sides.
6) Divide both sides by 2
7) Now substitute this value of J into equation 1) to find the value of B.
8)
9)
Bob's present age is 25 and his daughter Jane's present age is 5.
Answer by MARIO OWHOLO(4) (Show Source): You can put this solution on YOUR website!
Let bob`s age be =b
Nd janes age = j
; b=5*j---equation 1
In 5 yrs time bob will be 3 times janes age
B+5=3(j+5)----equation 2
5j+5=3j+15
2j=10
J=5
Where b=5*5
B=25
Bob is 25yrs old
Also jane is 5yrs old
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