Question

70 coins of 50 and 10 paise total 19 rupees in a purse tell how number of coins of eaxh 10 paise and 50 paise

Answer 1

you have 70 coins of 10 and 50 values total values is 1900.

I will call the 10 unit t and 50 units f in other word

t is the number of 10 units coin


t+f =70
10t+50f=1900

now multiply first equation by 10 both sides
10t-10f=-700

10t+50f=1900 and add the second equation
40f=1200
f=30
t=40
40 multiply 10=400
30 multiply 50=1500
total value=1900