Two employees X and Y are paid a total of Rs. 638 per week by their employer. If X is paid 120 percent of the sum paid to Y, how much is Y paid per week?
Pick: A) s.250 B) s.280 C) s.290 D) s.299 E) s.300
Let the amount paid to X per week = x   and the amount paid to Y per week = y   Then x + y = 638   But x = 120% of y = 120y/100 = 12y/10   ∴12y/10 + y = 638   ⇒ y[12/10 + 1] = 638   ⇒ 22y/10 = 638   ⇒ 22y = 6380   ⇒ y = 6380/22 = 580/2 = Rs.290   s.290
<result>C</result>
Two employees X and Y are paid a total of Rs. 638 per week by their employer. If X is paid 120 percent of the sum paid to Y, how much is Y paid per week?