Question

I have a total $300 in coins denomination $1 $2$5 number of $2 coins. is 3time the numbers of $5 coins. the total number of coins is160. how many coins of each denomination are with me?​

Answer 1

Step-by-step explanation:

Total money = $300

Let the no. of $5 coins be x

then $2 coins = 3x

$ 1 coins = 160-4x

$5 = 5*x

$2 = 2*3x

$1 = 1(160-4x)

$5*x 3x*$2+ 160-4x = $300

$5x +$6x-4x = $300-160

$7x = $140

x =$140/$7

x = 20

$5 = x = 20 coins

$2 = 3x = 3*20 = 60 coins

$1 = 160-4x = 160-4*20 = 80 coins