Question

I have a total of $300 in coins of denomination$1,$2,$5.The number of $2coins is 3 times the number of$5coins.The total number of coins is 160.How many coins of each denomination arewith me?​

Answer 1

Let's , no of 5$ coins be X

so , no . of 2$ coins will 3x

total money :- $300

here we can find no. of 1$ coin

3x = 300

x = 100

so total money of. $5 coins = 300 $

total no of 2$ coins = 100 $

and no. of 1$ coins will be 100 coins

so ,. 100 + x + 3x = 160

4x = 60

x = 15

no. of 5$ coins = 15 * 3

= 45 coins

no. of 2$ coins. = 15 coins

no. of 1$ coins = 100