in a cash bag there are currency notes in denominations of rs..., Ratio & Proportion, General Mathematics

Question:In a cash bag there are currency notes in denominations of `Rs. 20` Rs. 10` and `Rs. 5` in the ratio `3 : 4 : 5`. If the total amount in the bag is `Rs. 1000`, the number of five-rupee notes is :

A `40` 
B `36` 
C `30` 
D `25`

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+ AnswerA

+ ExplanationRatio of the number of `Rs. 20, Rs. 10, Rs. 5`

notes `= 3 : 4 : 5`.

Ratio of their values `= 60 : 40 : 25 = 12 : 8 : 5`.

Value of five-rupee notes `=Rs. (1000 xx 5/(25))`

`= Rs. 200`.

Number of five-rupee notes `= ((200 )/5) = 40`.

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