How Many Stamp were Purchased by Man?

A man purchased 147 stamp of 60-paisa and 35 paisa. The total amount he spent was Rs. 68.20. How many 35-paisa stamps were purchased by him?

  1. 60
  2. 72
  3. 76
  4. 80
Monis Rasool Professor Asked on 7th August 2015 in Maths.
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1 Answer(s)

Answer: (4) 80

Explanation:-
Let the number of  stamps be X which cost  of a stamp  is 60 p  & the number of stamps Y which cost of a stamp is 35 p.
The total number of stamp = 167
Then, X + Y = 167          …………………….. (1)
The total cost of stamps = Rs.68.20
Then, 60 X + 35 Y = 167
Divide by 5 ,
12 X + 7 Y  = 13.64                      …………….. (2)

Solve equation (1) & (2) ,
X = 67 & Y = 80

Then, the number of 35-paisa stamps is 80.

Hence, the answer is (4) 80.

Anurag Mishra Professor Answered on 7th August 2015.
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