Question

A man buys postage stamps of denominations 3 paise and 5 paise, for ₹ 1.00. He buys 22 stamps in all. Find the number of 3 paise stamps bought by him. ​

Answer 1

Answer:

Step-by-step explanation:

let's assume that the number of 3 paise and 5 paise tickets are x and y respectively

3x+5y=100..(i)

x+y=22...(ii)

multiplying equation (ii) with 5 on both side

5x+5y=110.(iii)

subtracting equation (i) from equation (iii)

2x=10

x=5

so the men bought 5 number of 3 paise tickets

Answer 2

Step-by-step explanation:

let the number of 3 paise and 5 paise coins be x and y

total coins = 22

=>x+y=22=> 3x+3y=66

also, 3x+5y=100

subtract both equations

so 2y=34=> y=17

so x= 5

thus he bought 5 stamps of 3 paise