SOLUTION: Andrew is two years older that Bianca if their ages have a sum of 28 years, how old is each one?

Question 1014820: Andrew is two years older that Bianca if their ages have a sum of 28 years, how old is each one?
Found 2 solutions by Alan3354, macston:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Andrew is two years older that Bianca if their ages have a sum of 28 years, how old is each one?
-----------
A + B = 28
A - B = 2
----------------- Add

Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
A=Andrew's age; B=Bianca's age
.
A=B+2yrs . Use this to substitute for A below
.
A+B=28 yrs . Substitute for A from above.
.
(B+2yrs)+B=28yrs . Subtract 2 yrs from each side.
.
2B=26 yrs . Divide each side by 2.
.
B=13 yrs
.
ANSWER 1: Bianca is 13 years old.
.
A=B+2yrs=13yrs+2yrs=15yrs
.
ANSWER 2: Andrew is 15 years old.
.
CHECK:
.
A+B=28yrs
.
15yrs+13yrs=28yrs
.
28yrs=28yrs
.

RELATED QUESTIONS
Andrew is three years older than Mary. if the sum of their ages total 27. How old is Mary (answered by Fombitz)
Isaac is 7 years older than Bianca. In 6 years the sum of their ages will be 65. How old... (answered by greenestamps)
Spencer is 4 years older than Bianca. In 9 years the sum of their ages will be 58. How... (answered by josgarithmetic)
Andrew is 4 years older than Amber. In 4 years the sum of their ages will be 46. How old... (answered by lawdej)
Andrew is 4 years older than Natalie. In 5 years the sum of their ages will be 44. How... (answered by josgarithmetic)
bob is two years older than jim. if the sum of their ages is 104 years. how old is bob? (answered by stanbon)
a mother’s age is 13 years older than twice her daughters age. if the difference of... (answered by josgarithmetic)
Vicky is 5 years older than Pam. If the sum of their ages is 67 years, how old is... (answered by ankor@dixie-net.com)
Larry is 5 years older than Mark and Andrew is 6 years older than twice Larry’s age.... (answered by ewatrrr,josgarithmetic)