EXERCISE-12.3
Question 1:
If the cost of 7 m of cloth is Rs 294, find the cost of 5 m of cloth.
Answer:
Cost of 7 m cloth = Rs 294
Cost of 1 m cloth =
Therefore, cost of 5 m cloth = 42 × 5 = Rs 210
Question 2:
Ekta earns Rs 1500 in 10 days. How much will she earn in 30 days?
Answer:
Money earned in 10 days = Rs 1500
Money earned in 1 day =
Therefore, money earned in 30 days = 150 × 30 = Rs 4500
Question 7:
Cost of 4 dozens bananas is Rs 60. How many bananas can be purchased for Rs 12.50?
Answer:
Numbers of bananas bought in Rs 60 = 4 dozens = 4 × 12 = 48
Number of bananas bought in Re 1 =
Therefore, number of bananas bought in Rs 12.50 =
= 10 bananas
Thus, 10 bananas can be purchased for Rs 12.50.
Question 8:
The weight of 72 books is 9 kg. What is the weight of 40 such books?
Answer:
Weight of 72 books = 9 kg
Weight of 1 book =
Therefore, weight of 40 books =
Thus, the weight of 40 such books is 5 kg.
Question 11:
Anish made 42 runs in 6 overs and Anup made 63 runs in 7 overs. Who made more runs per over?
Answer:
Runs made by Anish in 6 overs = 42
∴ Runs made by Anish in 1 over =
Runs made by Anup in 7 overs = 63
∴ Runs made by Anup in 1 over = 
= 9
Clearly, Anup made more runs per over.
