8 friends went to a hotel and decided to pay the bill amount equally. But 7 of them could pay Rs. 80 each as a result 8th has to pay Rs. 70 extra than his share. Find the amount paid by him. Answers
A) 140 B) 121 C) 110 D) 160 E) None
Explanation:   Average amount paid by 7 persons = Rs. 80   Increase in average due to Rs. 70 paid extra by the 8th men = Rs. 70/7= Rs. 10   Therefore, Average expenditure of 8 friends = Rs. 80 + Rs. 10 = Rs. 90   Therefore, Amount paid by the 11th men = Rs. 90 + Rs. 70 = Rs. 160   Correct Option: 160
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8 friends went to a hotel and decided to pay the bill amount equally. But 7 of them could pay Rs. 80 each as a result 8th has to pay Rs. 70 extra than his share. Find the amount paid by him.