Question

10. A man buys postage stamps of denominations
3 paise and 5 paise for Re. 1.00. If he buys
22 stamps in all, then the number of 5 paise
stamps bought by him is
(1) 5
(2) 17
(3) 15
(4) 7​

Answer 1

Answer:

(2) 17

Step-by-step explanation:

As there are total 22 stamps so let 3p stamps is x and 5p stamps is y

# x+y=22 (1)

As he have total stamps of amount 100p so he should have purchase some amount of both stamps si

3x+5y=100. (2)

.(1)*3= 3x+3y=66

Substracting (1) from (2)