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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» 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 - 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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