Question

A sewing machine uses 1.6kWh of electricity in one day. If electricity costs 9p per unit, what is the total cost in pence of using the sewing machine that day? Give your answer to 3 significant figures

Answer 1

Answer:

In one day the uses of electricity is 1.6kWh

if 1 unit of electricity costs 9p

then 1.6kWh electricity costs 14.4 p