Question

a bag contains 1rupee,50 paisa,25 paisa,10 paisa in the proportion 1:3:5:7.if the total amount is₹22.25, find the number of coins each kind

Answer 1

$1x + .5 \times 3x + .25 \times 5 + .1 \times 7 = 22.5 \\ 1x + 1.5x + 1.25x + .7x = 22.25 \\ 4.45x = 22.25 \\ x = 5$