GATE | GATE CS 2019 | Question 6
Ten friends planned to share equally the cost of buying a gifts for their teacher. When two of them decided not to contribute, each of the other friends had to pay Rs. 150 more. The cost of the gift was Rs. _________ .
(A) 666
(B) 3000
(C) 6000
(D) 12000
Answer: (C)
Explanation: Let share of each student = x
Since cost of gift will be same in both situation, therefore,
→ 10*x = 8*(x + 150) → 10*x = 8*x + 8*150 → 2*x = 8*150 → x = 8*150 / 2 → x = 600
Therefore, cost of gift is,
10*x = 10*600 = 6000
Option (C) is correct.
Quiz of this Question