Weights of two friends Ram and Shyam are in the ratio 1:5. If Ram's weight is increased by 10% and total weight of Ram and Shyam become 82.8 kg, with an increases of 15%. By what percent did the weight of Shyam has to be increased?
Pick
A) 19% B) 10% C) 21% D) 16% E) None
Solution:   given ratio of Ram and Shayam's weight = 1:5   Hence, (x-15)/(15-10) = 1/5   Or, x = 16%.   Answer: Option 16%
<result>D</result>
Weights of two friends Ram and Shyam are in the ratio 1:5. If Ram's weight is increased by 10% and total weight of Ram and Shyam become 82.8 kg, with an increases of 15%. By what percent did the weight of Shyam has to be increased?