Railways Mathematics Ratio Proportion and Partnership Sample Paper Ratio, Proportion & Partnership Sample Test Paper-6

  • question_answer Some 1 rupee, 50 paisa and 25 paise coins make up Rs. 93.75 and their number are in proportion 3: 4: 5. The number of each type of coins, are

    A)  40, 70, 75        

    B)  46, 58, 75

    C)  42, 56, 70

    D)  45, 60, 75

    Correct Answer: D

    Solution :

    [d] Let no. of one-rupee, 50 paise and 25 paise coins be 3x, 4x and 5x respectively \[\therefore \] \[3x\times 1+4x\times 0.5+5x\times 0.25=93.75\] \[\Rightarrow \] \[3x+2x+1.25x=93.75\] \[\Rightarrow \] \[6.25x=93.75\] \[\Rightarrow \] \[x=15\] \[\therefore \] No. of coins are 45, 60, 75

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