a purse contains one rupee 50 paise 25 and 20..., Ratio & Proportion, General Mathematics

Question:A purse contains one-rupee, `50-` paise, `25-` paise and `20-` paise coins in the ratio of `1 : 2 : 4 : 5`. If the total value of coins is `Rs. 400`, then the number of `20-` paise coins exceeding those of `25-` paise coins is :

A `100` 
B `200` 
C `400` 
D `500`

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+ AnswerA

+ ExplanationRatio of values `= 1/1 : 2/2 : 4/4 : 5/5 = 1 : 1 : 1 : 1`.

Value of `20` paise coins `= Rs. (400 xx 1/4) = Rs. 100`.

Number of `20` paise coins `= (100 xx 5) = 500`.

Value of `25` paise coins `= Rs. (400 xx 1/4) = Rs. 100`.

Number of `25` paise coins `= (100 xx 4) = 400`.

Difference in number of `20-` paise & `25-`paise coins `= 100`.

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