Question

70 coins of 10 paise and 50 paise are kept in a purse. if the total value of the money in the purse is Rs 19 . find the no. of each type of coins​​

Answer 1

10=40

50=30

Explanation:

Suppose the number of 10 paise coins =x

∴ the number of 50 paise coins =70−x

Now, value of 10 paise coins = Rs.

10 x and value of 50 paise coins = Rs. 2 70−x

Total value of coins = 10 x + 2 70−x

​∴ 10 x + 2 70−x =19

Multiplying both sides by 10, (LCM of 10,2=10), we get

x+5(70−x)=19×10

x+350−5x=190

−4x=−160

−4 −4x = −4 −160

​∴x=40

∴ number of 10 paise coins =40

Number of 50 paise coins =70−40=30.