Question

A bag contains $216$ in the form of one-rupee, $50$-paise and $25$-paise coins in the ratio of $2:3:4$. Find the number of $50$-paise coins.

Answer 1

Let number of 1rupee coin be$2x$

Let number of 50 paise coin be$3x$

Let number of 25 paise coin be $4x$

$Totalpaise=21600paise$

$2x\times 100+3x\times 50+4x\times 25=21600$

$200x+150x+100x=21600$

$450x=21600$

$x=48$

$\therefore$ number of 50 paise coin $=3\times 48=144$