Question

the weight of 20 metres of copper wire is 0.9 kilogram find the weight of 170 metre of the same wire ​

Answer 1

Answer:

The weight of 20 m of copper wire =0.9kg=900g

The weight of one m of copper wire =

$900 \div 20 = 45g$

The weight of 170 m of copper wire =

$45 \times 170 = 7650g = 7.650kg$

Answer 2

Weight of 1m = 20/0.9
=22.22
170m= 170*22.22
=3777.78