The total money spent by them was :

9 men went to a hotel 8 of them spent 30 each over their meals and then 9th spent Rs. 20 more than the average expenditure of all the nine. The total money spent by them was

  1. Rs. 292.50
  2. Rs. 272.50
  3. Rs. 312.50
  4. Rs. 325.50
Anurag Mishra Professor Asked on 23rd January 2016 in Maths.
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  • 1 Answer(s)

    Answer: (1) Rs. 292.50

    Explanation:-
    Let the average expenditure of all the nine be Rs. X

    Therefore,  money spent by the ninth man = Rs. (X + 20)
    Total money spent by them = 9 X
     Then, 9 X = 8 x 30 + (X + 20)
     9 X = 240 + X + 20
    9 X – X = 260
    8 X = 260
    X = 260/8

    Then, total money spent by them = 260 x 9/8
     = Rs. 192.50

    Hence, the correct answer is option (1) Rs. 292.50

    Anurag Mishra Professor Answered on 23rd January 2016.
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