Question

a box contain x50 paise coin,2x one rupees coins and 3x two rupees coins if the total value of coins is rs68 find the value of x

Answer 1

x=8
as x50 paisa coins could be also written as .50x
2x one rupees coin could be also written as 2x multipled by 1 = x(2*1) = 2x
3x two rupees coin could be also written as 3x
multipled by 2 = x(3*2) =6x

now, .50x + 2x + 6x = rs68
{(.50+2+6)x} = rs68
so, 8.5x = rs68
so, x = RS 68 / 8.5
therefore x= 8

verification
.50*8=4
2*8=16
6*8=48
4+16+48 = 68