Question

(0)The weight of 72 books is 9 kg. What is the weight of 40 such
books?
(ii) Riya earns Rs 1500 in 10 days. How much will she earn in 30
days?
1
(0) Find the cost of fencing a rectangular park of length 175 m and
breadth 125 metre at the rate of Rs 12 per metre.
(ii) find the area of a square whose perimeter is 36 metre​

Answer 1

Answer:

5kg

Step-by-step explanation:

weight of 72 books = 9kg

so, weight of 1 book = 9/72 kg

and , weight of 40 books = 9/72 × 40

= 5 kg