A purse contains some coins. Of these, the number of one-rupee coins is three times the number of five-rupee coins and twice the number of two-rupee coins. If the total number of coins is 66, what is the value of the five-rupee coins?
please answer it fast and please mention that why we have to take 3x/2?
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. No. of Rs. 5 coins = x
. No. of Rs. 1 coins = 3x
. No. of Rs. 2 coins = 3x/2
=> No. of coins => x+3x+3x/2=66
=> (2x+6x+3x)/2=66
=> 11x/2=66
=> x=(66X2)/11
=12
=> Value of Rs. 5 coins=12x
=Rs. 5X 12
=Rs. 60
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