10 friends went to a hotel and decided to pay the bill amount equally. But 9 of them could pay Rs. 50 each as a result 10th has to pay Rs. 180 extra than his share. Find the amount paid by him.
Choose the correct choice from the following options
A) 130 B) 140 C) 110 D) 120 E) None
Explanation:   Average amount paid by 9 persons = Rs. 50   Increase in average due to Rs. 50 paid extra by the 10th men = Rs. 180/9= Rs. 20   Therefore, Average expenditure of 10 friends = Rs. 50 + Rs. 20 = Rs. 70   Therefore, Amount paid by the 10th men = Rs. 70 + Rs. 50 = Rs. 120   Correct Option: 120
<result>D</result>
10 friends went to a hotel and decided to pay the bill amount equally. But 9 of them could pay Rs. 50 each as a result 10th has to pay Rs. 180 extra than his share. Find the amount paid by him.