Question
The weight of two persons Vishwas and Vivek are in the
ratio 5:7. If the weights are increased in such a way that Vivek’s weight is increased by 20% and the total weight of Vivek and Vishwas is increased by 30%. By what percent did the weight of Vishwas increase, if the new total weight is 156 Kg?Solution
(Vishwas + Vivek)’s initial Weight = 156 x 100/130 = 120  Vishwas’s wt. =120 x 5/12 = 50 kg Vivek’s wt. = 120 x 7/12 = 70kg Now, after increaseVivek’s weight = 70 x 120/100 = 84kg After increase Vishwas’s weight = 156 – 84 = 72 kg Required percent = (72-50)/50 x 100 = 44%
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