A man buys two chairs for a total cost of Rs.900. By selling one for 4/5 of its cost and the other for 5/4 of its cost, he makes a profit of Rs.90 on the whole .The cost of the lower priced chair is-

Options
1) Rs.360
2) Rs.400
3) Rs.420
4) Rs.300

• (d) Let CP of first chair =x
  CP of 2nd chair=900-x
  so,SP of 1st chair=4x/5
  and SP of 2nd chair=(900-X)5/4
  Profit=SP-Cp
  90=4x/5+(900-X)5/4-900
  X=300
  1st chair CP=300 and 2nd chair=600
  
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• 7 years agoHelpfull: Yes(0) No(1)
• Total C.P. of both chairs = Rs. 900/-
  Profit on selling = Rs. 90/-
  Let the C.P. of one chair be Rs. x
  S.P. of the chair = Rs. 4/5x
  The C.P. other chair Rs. (900 - x)
  S.P. of the chair = Rs. 5/4(900-x)
  ATP,
  Profit = S.P. – C.P.
  90 = {4/5x +5/4(900 – x)} – 900
  990 *20 = 25x –16x + 25*900
  22500-19800= 25x-16x
  X= 300/-
  Answer. D
• 5 years agoHelpfull: Yes(0) No(0)