Question

70 coins of 10 paise and 50 is kept in a purse total is 19 rupees. find the no. of 10 and 50 paise coins

Answer 1

Hi...☺

Here is your answer...✌

Let the no. of 10 paise coins be x and 50 paise coins be y

Given that ,

There are 70 coins of 10 paise and 50 paise

Therefore,

x+ y = 50 -----(1)

And Total amount is
19 rupees = 1900 paise

Therefore,

10x + 50y = 1900

=> x + 5 y = 190 -----(2)

Subtracting eq(1) from (2), We get

x + 5y - (x - y) = 190 - 50

x + 5y - x - y = 140

=> 4y = 140

=> y = 140/4

=> y = 35

Putting y = 35 in eq(1), We get

x + 35 = 50

=> x = 50 - 35

=> x = 15

Hence,

Number of 10 paise coin is 15
And number of 50 paise coin is 35