a bag contains 600 coins of 25 p denomination and 1200 50p..., Percentage, General Mathematics

Question:A bag contains `600` coins of `25 p` denomination and `1200` coins of `50p` denomination. If `12%` of `25%` coins and `24%` of 50p coins are removed, the percentage of money removed from the bag is nearly :

A `30%` 
B `21.6%` 
C `17.8%` 
D `15.6%`

/114

+ AnswerB

+ ExplanationTotal money 

`= (600 xx 25/100 + 1200 xx 50/100)`

`= Rs. 750.`

`25` paise coins removed

`= (12/100 xx 600)`

`= 72`

`50` paise coins removed 

`= (24/100 xx 1200)`

`= 288`

Money removed

`= (72 xx 25/100 + 288 xx 50/100)`

`= Rs. 162`

Required percentage

`= (162/750 xx 100)%`

`= 21.6%`

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