the present age of a and b are in the ratio 5:6 five year ago their age were in the ratio 4:5•find their present age?
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Answer:
25 & 30 year
Step-by-step explanation:
As the ratio is 5:6, let the present age of a be 5x and that b be 6x.
Five year ago:
Age of a = pres. age - 5 = 5x - 5
Age of b = pres. age - 5 = 6x - 5
In question, that time, ratio is 4:5,
= > (5x - 5):(6x - 5) = 4:5
= > 5(5x - 5) = 4(6x - 5)
= > 25x - 25 = 24x - 20
= > 25x - 24x = 25 - 20
= > x = 5
So, present age of:
a = 5x = 5(5) = 25 year
b = 6x = 6(5) = 30 year
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