Question

Solve the following word problems. Each question carries 4 marks.
(8 marks)
a) A 56.8 kg concrete slab can be balanced by two concrete pillars, each weighing
41.3 kg. How many concrete pillars are needed to support slabs that weigh 681.6
kg? Calculate the total weight of the slabs and the pillars.
b) In the past, Pintu and Amu could finish running a race in 29.8 seconds and
284 seconds, respectively. At present, they can finish the race in 25 seconds and
31.5 seconds, respectively. Compare their present timing with their previous timing.
Who improved in their timing and by how much?
1​

Answer 1

Answer:

It is so difficult can't understand sorry

Answer 2

Answer:

Solve the following word problems. Each question carries 4 marks.

(8 marks)

a) A 56.8 kg concrete slab can be balanced by two concrete pillars, each weighing

41.3 kg. How many concrete pillars are needed to support slabs that weigh 681.6

kg? Calculate the total weight of the slabs and the pillars.

b) In the past, Pintu and Amu could finish running a race in 29.8 seconds and

284 seconds, respectively. At present, they can finish the race in 25 seconds and

31.5 seconds, respectively. Compare their present timing with their previous timing.

Who improved in their timing and by how much?

1