Question

70 coins of 10 paise and 50 paise are mixed in 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

let 10 paise coin be = x
then value of coins= 10x
50 paise coin be = 70-x
value of coins= (70-x)50
19rup = 1900 paise(total purse money)
total money in purse= 10x+ (70-x)50= 1900
= 10x + 3500 - 50x = 1900
= -40x = -1600
x= 40
10 paise coins= 40
value of coins= 40 x 10 = 400 paise= 4 rup
50 paise coins= 70-40= 30
value of coins= 50 x 30= 1500 paise= 15 rup