Question

# A man bought 3 paise and 5 paise denomination stamps for Rs 1.00. In total he bought 22 stamps. Find out total number of 3 paise stamps bought by him.

Hint:

### let the no. of 3 pairse stamps bought be x and no.of 5 pairse stamps bought be y

Total no. of stamps = no. of 3 paise stamps +no. of 5 paise stamps = 22

Total cost of stamps = 3 no. of 3 paise stamps + 5 no. of 5 paise stamps = 100 paise

## The correct answer is: 3 pairse

### Ans :- There are 5 stamps of 3 paise.

Explanation :-

let the no. of 3 paise stamps bought be x and no. of 5 paise stamps bought be y

Step 1:-Frame the equations from the given conditions.

Total no. of stamps = no. of 3 paise stamps +no. of 5 paise stamps = 22

— Eq1

Total cost of stamps = 3 no. of 3 paise stamps + 5 no. of 5 paise stamps = 100 paise

— Eq2

Step 2:- Eliminate y to find x

Doing 5(Eq1) -(Eq2) to eliminate y

∴ x = 5

∴ The no. of 3 paise stamps = x = 5 stamps

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