Five years ago, a mother was seven times as old as her daughter. five years hence, she will be three as old as her daughter. find their present ages.
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Answer:
Step-by-step explanation:
Let present age of mother be x years
Age of daughter be y years
x - 5 = 7 ( y - 5 )
x - 5 = 7y - 35
x - 7y = -30 (1)
x + 5 = 3 ( y + 5 )
x + 5 = 3y + 15
x - 3y = 10 (2)
Subtracting (1) from (2),
x - 7y = -30
x - 3y = 10
- + -
------------------
-4y = -40
y = 10 years
Putting y = 10 in (2),
x - 3*10 = 10
x = 10 + 30 = 40
The age of mother & daughter is 40 years & 10years respectively
I hope this will help you..
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