Question

23. Find the sum of: 7/5 and −2/3
24. Write three rational numbers between −1 /2
and 1/2
25. The area of a square and a rectangle are equal. If the side of the square 30 cm and breadth of the
rectangle is 25 cm , find the length of the rectangle.
26. Chalk contains Calcium, Carbon and Oxygen in the ratio 10:3:12.
i) Find the percentage of Carbon in Chalk.
ii) If in a stick of Chalk, Carbon is 6 g. What is the weight of the Chalk stick?
27. A path 1m wide is built along the border and inside a square garden of side 26m. Find:
i) The area of the path.
ii) The cost of planting grass in the remaining portion of the garden at the rate of Rs. 45 per m2

Answer 1

Step-by-step explanation:

24. Write three rational numbers between −1 /2

and 1/2

25. The area of a square and a rectangle are equal. If the side of the square 30 cm and breadth of the

rectangle is 25 cm , find the length of the rectangle.

26. Chalk contains Calcium, Carbon and Oxygen in the ratio 10:3:12.

i) Find the percentage of Carbon in Chalk.

ii) If in a stick of Chalk, Carbon is 6 g. What is the weight of the Chalk stick?

27. A path 1m wide is built along the border and inside a square garden of side 26m. Find:

i) The area of the path.

ii) The cost of planting grass in the remaining portion of the garden at the rate of