Question

there are some 50 paise and some 25 paise coins in a bag if the total number of coins is 25 and their value is rupees 8.50 find the number of coins of each kind

Answer 1

50 paise=1/2

25 paise=1/4

Number 50 paise is x

number 25 paise is 25-x

1/2*x+1/4*(25-x) =8.50

2x+25-x=8.50*4

x=34-25

x=9

25 paise=16