mary is twice older than her sister in 5 years time sshe will be 2 years older than her sister find how old are they both now
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Answer:
Let sister's age be x
Mary's age is 2x (given)
After 5 years,
Sister's age will be x+5
Mary's age will be 2x+5
But,
According to the question,
Mary's age after 5 years = (x+5) + 2
Equating,
2x+5= (x+5) +2
2x+5= x+5+2
2x+5= x+7
2x-x= 7-5 (bringing the like terms together)
x= 2
Therefore,
Sister's age is 2 years
Mary's age is 2x = 2×2= 4 years.
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