Question

A plumber has 2.5 metre long copper pipe. he needs to cut lengths of 60 cm, 35cm and 90cm work out how many of the initial 2.5 metre long pipe is left. give your answer in cm

Answer 1

The answer to your question is there will be 65 cm left.

Explanation:

Data

Length of the pipe = 2.5 m

Pieces cut = 60 cm, 35 cm, 90 cm

Pipe left = ?

Process

1.- Convert the length of the original pipe to cm

100 cm ----------------- 1 m

x ------------------2.5 m

x = (2.5 x 100) / 1

x = 250 cm

2.- Subtract the length of the pieces to the original length

250 cm - 60 cm - 90 cm - 35 cm

250 cm - 185 cm

65 cm

3.- Conclusion

There are 65 cm left.