Question

26. Arya has 300 in coins of denomination 51, 52 and 5 in her piggy bank. The number of? 2.
coins is 5 times the number of 5 coins. The total number of coins is 170. How many coins,
each denomination are with her?
27.​

Answer 1

Answer:

Let x be no of 1 re coins, y for 2 rs coins and z for 5 rs coins.

Then value = x+2y+5z = 300 ... (i)

x = 5z ...(i)

and x+y+z = 170 ..(i)

Subtract 2(iii) from (i) to have

-x+3z=-40 ...(iv)

Add (iv) with (ii) to get 3z = 52-40

z = 20, hence x = 100 and y = 170-x = 50 There are 100 coins of 1 re,50 coins of rs2 and 20 coins of Rs.5/-.