Eleven friends spend Rs 18 each on a tour and the twelfth friend spend Rs 11 less than the average expenditure of all twelve of them. What is the total money spent by twelve friends?
Answer & explanation
Correct answer: option 1
Average expenditure of eleven friends = Rs 18 (each spends the same amount)
Let the expenditure of the twelfth person be Rs x,
According to the question,
x = $\frac{18\times11\; +\; x}{12}$ - 11
12x + 12x11 = 198 + x
11x = 66 ⇒ x = 6
total money spend by twelve friends = 18x11 + 6 = Rs 204