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Question : Eleven friends spent Rs. 18 each on a tour and the twelfth friend spent Rs. 11 less than the average expenditure of all twelve of them. What is the total money spent by the twelve friends?

Option 1: Rs. 204

Option 2: Rs. 215

Option 3: Rs. 212

Option 4: Rs. 208


Team Careers360 22nd Jan, 2024
Answer (1)
Team Careers360 25th Jan, 2024

Correct Answer: Rs. 204


Solution : Given: Eleven friends spent Rs. 18 each on a tour and the twelfth friend spent Rs. 11 less than the average expenditure of all twelve of them.
Let the average expenditure of all twelve of them = $x$
According to the question,
$12x = (11×18)+(x-11)$
⇒ $12x-x=198-11$
⇒ $11x=187$
⇒ $x=17$
So, the total money spent by twelve friends = (12 × 17) = Rs. 204
Hence, the correct answer is Rs. 204.

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