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Sum of X and Y age 7 year ago is 86. X age 20 year ago is equal to Y age 4 year ago. Find the age of Y four year hence.1). 48 years2). 50 years3). 46 years4). 52 years |
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Answer» Let the PRESENT AGE of X and Y are x and y respectively. Sum of X and Y age 7 YEAR ago is 86 ⇒ (x - 7) + (y - 7) = 86 ⇒ x + y = 100-----(i) X age 20 year ago is equal to Y age 4 year ago. x - 20 = y - 4 ⇒ x - y = 16-----(ii) Solving the equation (i) and (ii) Present age of X = 58 years Present age of Y = 42 years Age of Y four year hence = 42 + 4 = 46 years |
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