Mr pin paid £7.05 for 1.5 metres of material.
1. what was the cost per metre?
2. how much would 3.5 metres cost?

1.5 multiplied by 2/3 is 1. Therefor we must multiply 7.05 buy 2/3 which is 4.7 So the cost per metre is 4 pounds 70 pence. We multiply 1 by 3.5 to get 3.5, so we must multiply 4.70 by 3.5 which is 16.45

1.   4.70
2.   16.45

The percent discount was 120