Asked by shankar
the difference of ages between 2 sisters is 10 years, 15 years ago elder 1 was twice as old as younger age. find the both present age?
Answers
Answered by
Steve
b-a=10
(b-15) = 2(a-15)
(a+10-15) = 2(a-15)
a-5 = 2a-30
a = 25
So, the sisters are 25 and 35
check:
15 years ago they were 10 and 20
(b-15) = 2(a-15)
(a+10-15) = 2(a-15)
a-5 = 2a-30
a = 25
So, the sisters are 25 and 35
check:
15 years ago they were 10 and 20
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