Maths-
General
Easy

Question

1 fourthlitre of milk cost Rs.15 over 2. Find the cost of 9 over 2 litre of milk.

  1. Rs.125
  2. Rs.135
  3. Rs.145
  4. Rs.130

The correct answer is: Rs.135


    Cost of 1 fourth litre milk = Rs.15 over 2
    Cost of 1 litre milk = Rs. left parenthesis 15 over 2 right parenthesis left parenthesis 1 fourth right parenthesis
    = Rs left parenthesis 15 over 2 cross times 4 over 1 right parenthesis
    = Rs 30
    Cost of 9 over 2 litre of milk = 30 × 9 over 2
    =fraction numerator left parenthesis 30 space cross times space 9 right parenthesis over denominator 2 end fraction
    = Rs 135

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