# The Junk Seller – Class 4.

CBSE CLASS 4 MATHEMATICS
The Junk Seller – Chapter 6 /Model Questions.

1. If a person who runs a tea stall earns Rs 30 in a day, how much will he earn
a) in 10 days?
b) in one month?
2. Hariya and Babu want to buy a handcart for Rs 300. Hariya took a loan of Rs 300 from a bank for six months.He paid back Rs 51 every month to the bank. Babu took a loan of Rs 300 from Chunnilal. After six months he will pay back Rs 360.Who has to pay back more – Hariya or Babu?
3. Kiran has 9 rickshaws. He gave the rickshaws on rent, each for Rs 20 on a day. a) How much does Kiran earn from 9 rickshaws in a day? b) In a week how much does Kiran earn from one rickshaw?
4. Do it mentally and write the answers:
2 x 6 = —–
20 x 6 = ——-
2 x 60 = ——
3 x 42 = ——
4 x 80 = ——
4 x 81 = ——-
9 x 25 = ——
31 x 9 = ——-
5. If 1 kg newspaper cost is Rs 5.
a) How much will Kiran pay for 31 kg?
b) How much will Kiran pay for 42 kg newspaper?
6. If the cost of 1 kg plastic is Rs 10, 1 kg waste paper is Rs 4 and 1 kg iron is
Rs 12. Find the cost of
a) 22 kg of plastic?
b) 23 kg of wastepaper?
c) 12 kg of iron?
7. Kiran bought 1 kg plastic for Rs 10, but sold 1 kg plastic for Rs 12.
a) How much money does she earn on selling 1 kg plastic?
b) If Kiran earns Rs 2 for 1 kg of plastic, how much money does she earn for 63 kg?
8. Kiran buys 1 kg iron for Rs 12, but sells it for Rs 14.How much does she earns when she sells 32 kg of iron?
9. Deepu bought 1 kg newspaper for Rs 5, but sold it for Rs 6. How much money did he earn by selling 152 kg of newspaper?
10. If the cost of 1 kg of brass is Rs 180. How much money will Dinu pay for 4 kg brass?

1. a) Earning in one day = Rs 30
Earning in 10 days = 30 x 10 = 300 rupees.
b) We can take number of days in one month = 30
Earning in one month = 30 x 30 = 900 rupees.
2. Amount paid back by Hariya in every month = Rs 51
Money paid by Hariya for six months = 51 x 6 = Rs 306
Amount paid by Babu after 6 months = Rs 360
Hence Babu pays more money than Hariya.
3. a) Earning from one rickshaw = Rs 20
Earning from 9 rickshaws = 20 x 9 = 180 rupees.
b) Money earned from one rickshaw = Rs 20
We know that there are 7 days in a week.
Earnings in one week = 20 x 7 = 140 rupees.
4. 2 x 6 = 12
20 x 6 = 120
2 x 60 = 120
3 x 42 = 126
4 x 80 = 320
4 x 81 = 324
9 x 25 = 225
31 x 9 = 279
5. a) Cost of 1 kg newspaper = Rs 5
Cost of 31 kg newspaper = 5 x 31 = Rs 155.
b) Cost of 42 kg newspaper = 5 x 42 = Rs 210.
6. a) Cost of 1 kg plastic = Rs 10
Cost of 22 kg plastic = 22 x 10 = 220 rupees.
b) Cost of 1 kg wastepaper = Rs 4
Cost of 23 kg of wastepaper = 23 x 4 = 92 rupees.
c) Cost of 1 kg iron = Rs 12
Cost of 12 kg of iron = 12 x 12 = 144 rupees.
7. a) Cost of 1 kg plastic = Rs 10
Selling price of plastic = Rs 12
Her earnings = 12 – 10 = 2 rupees.
b) Earning from 1 kg plastic = Rs 2
Earning for 63 kg of plastic = 63 x 2 = 126 rupees.
8. Earning by selling 1 kg of iron = 14 – 12 = 2 rupees
Earning by selling 32 kg of iron = 32 x 2 = 64 rupees.
9. Money earned by selling 1 kg newspaper = 6 – 5 = 1 rupees.
Money earned by selling 152 kg of newspaper = 152 x 1 = 152 rupees.
10. Cost of 1 kg of brass = Rs 180
Cost of 4 kg of brass = 180 x 4 = Rs 720.