SOLUTION:
Donna is 12 years younger than her brother. In 2 years, she will be 14 years more than half as old as her brother.How old is each now?
Algebra.Com
Question 704771:
Donna is 12 years younger than her brother. In 2 years, she will be 14 years more than half as old as her brother.How old is each now?
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
D=B-12
D+2=B/2
SUBSTITUTE (B-12) FOR D IN THE SECOND EQUATION.
B-12+2=B/2
B-10=B/2 CROSS MULTIPLY.
B=2(B-10)
B=2B-20
B-2B=-20
-B=-20
B=20 ANS. FOR BROTHER'S AGE.
D=20-12=8 AGE OF DONNA.
PROOF:
8+2=20/2
10=10
RELATED QUESTIONS
Donna is 12 years younger than her brother. in 2 years, she will be 4 years than half as... (answered by lynnlo)
Katie is 2 years younger than her brother. In 12 years, her brother will be twice as old... (answered by ikleyn,advanced_Learner)
Paige is 10 years older than her brother. In 7 years, Paige will be twice as old as her... (answered by ewatrrr)
Edwina is 12 years younger than her brother. How old is she if her brother is 28 years... (answered by ewatrrr)
Lisa will be half as old as her brother in five years. How old will she be in seven... (answered by lwsshak3)
Ruby is 14 years older than her little brother Harry. In six years she will be twice as... (answered by Maths68)
girl is 5 times older than her brother, in 6 years she will be twice as old as her... (answered by stanbon)
Ning is 8 years younger than her brother Michael. Twenty-eight years ago, she was half as (answered by josgarithmetic)
Jackie is five years older than her brother. In four years, Jackie will be twice as old... (answered by ptaylor)