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Eight men went to a restaurant. Seven of them spent Rs. 160 each on their meals. Eighth man spent Rs. 7 more than the average of all of them. How much did the eighth man spend?


1. Rs. 84
2. Rs. 168
3. Rs. 160
4. Rs. 154

1 Answer

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Correct Answer - Option 2 : Rs. 168

Given:

Seven of them spent = Rs. 160 each

Eighth man spent Rs. 7 more than the average of all of them

Concept:

Average value = Sum of all values/Number of values

Calculation:

Let, average expenditure = Rs. x

According to the question,

⇒ 8x = 7 × 160 + (x + 7)

⇒ 7x = 1127

⇒ x = 161

∴ Eighth man spend = Rs. (161 + 7) = Rs. 168

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