Question

I have a total of 325 in the coins of denominations 2, 5 and 10. The number of 2 coins is 5 times

the number of 5 coins. The total number of coins is 100. How many coins of each denomination are with

me?​

Answer 1

total money =325 Rs

total number of coins = 100

let the number of 5 Rs coins be X and 2 Rs coins be 5X

so, number of 10 Rs coins be 100-6x

A.T.Q

5(X) + 2 (5X) + 10 ( 100 - 6X ) = 325

5X + 10X + 1000 - 60 X = 325

-45 x = -675

45x = 675

× = 15

so, x = 15

number of 5Rs coins = X = 15

number of 2Rs coins = 5x = 15×5 =75

number of 10 Rs coins = 100 - 6x = 100 - 6×15 = 100 - 90 = 10

Right answer

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