Question

70 coins of 10p. and 50p. are kept is a purse. if the total value of the money in the purse is Rs 19 find the number of each type of coin

Answer 1

Step-by-step explanation:

Let 10p coins be x

50p be y

x+y=70

x=70-y................(1)

The total no.of paise is =₹19(1900p)

10x+50y=1900(x=70-y)

10(70-y)+50y=1900

700-10y+50y=1900

700+40y=1900

40y=1900-700

40y=1200

y=1200/40

y=30

substitute y=30in equation (1)

x=70-30

x=40

therefore the no.of 10p coins is 40

the no.of 50p coins is 30