Question

The weight of 20metre of copper wire is 0.9 kg. Find the weight of 170 metre of the same wire in gram.

Answer 1

20 metre of copper wire = 9 / 10 kg. * 1. metre long copper wire = 9/ 10 × 20 = 18

Answer 2

Given :

The weight of 20metre of copper wire is 0.9 kg

To Find:

Find the weight of 170 metre of the same wire in gram.

Solution:

Weight of 20 m = 0.9 kg

1 kg =1000 g

0.9 kg = $0.9 \times 1000=900 g$

So, Weight of 20 m = 900 g

Weight of 1 m = $\frac{900}{20}g$

Weight of 170 m = $\frac{900}{20} \times 170=7650 g$

Hence The weight of 170 m is 7650 g