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\ 19-Nov-2025 Bharat Arora Proof-9 Reader’s Sign _______________________ Date __________

Exercise 11B

1. find out which is a better buy.

a. or b. or

12 for `60 20 for `80 2 kg for `50 5 kg for `100

c. d. or
or

8 for `288 5 for `225 12 dozen for `504 18 dozen for `684
2. Solve the following word problems:

a. 5 pens cost `45. Find the cost of 8 pens and then 15 pens.
b. 35 oranges cost `420. Find the cost of 25 oranges.
c. The cost of 18 books is `2,250. Find the cost of 4 books.
d. 12 kg of tomatoes cost `480. Find the cost of 27 kg of tomatoes.

e. The cost of 4 shirts is `2,600. Find the cost of one dozen shirts.
f. A man earns `45,000 in 9 months. How much will he earn in 2 years?
g. A family spends `432 on 6 litres of milk. How much will they spend to
buy 35 litres of milk?

BIllIng

Shyam Lal owns a large farm. He sells fresh vegetables from his
farm at the local Sabzi Mandi. He keeps copies of the bills for
the vegetables he sends to the market, along with the price of

each item.
Example. The table below shows an entry from his record book
for a particular day. However, his mischievous grandson has

erased some of the numbers.

S.no. Vegetable Cost of 1 kg Quantity Supplied (in kg) total Amount
1. Radish `26 78 `________
2. Potato `20 ________ `2,240

3. Cabbage `32 56 `________
4. Green peas ________ 125 `3,125
Total ________

238 Mathematics 5