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....cqudtion(4) Sum of the present ages of Manish and Savita is 31. Manish's age 3 years agowas 4 times the age of Savita. Find their present ages. |
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Answer» let the present age of Manish and savita be x and y respectively. as per 1st condition x+y=31--------(1)as per 2nd condition (x-3) = 4(y-3)x - 3 = 4y - 12x - 4y = -12 + 3x - 4y = -9-------(2)subtract eqn (2) from (1) x + y = 31- x - 4y = -9 - + + ——————— 5y = 405y = 40 y = 40÷5y = 8substitute the value of y =8 in eqn (1)x + y = 31x + 8 = 31x = 31 - 8x = 23 |
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