Nine persons went to the hostel for taking their meals, 8 of them spent Rs 12…
2024
Nine persons went to the hostel for taking their meals, 8 of them spent Rs 12 each on their meals and ninth spend Rs 8 more then the average expenditure of all nine. What is the total money spent by them ?
- A.
103
- B.
112
- C.
117
- D.
123
Attempted by 626 students.
Show answer & explanation
Correct answer: C
Answer: 117
Let the average expenditure of the nine persons be x.
Total spent by eight persons = 8 × 12 = 96. The ninth person spends x + 8.
Set up the average: (96 + (x + 8)) ÷ 9 = x.
Solve: 96 + x + 8 = 9x ⇒ 104 = 8x ⇒ x = 13.
Total money spent = 9 × x = 9 × 13 = 117.