Exam Questions

3

Elijah runs a go-kart track. It takes 12 litres of petrol to our

race 8 go-karts for 20 minutes. Petrol costs £1.37 per litre.

a) 6 go-karts used 18 litres of petrol. How many minutes did they race for?

17.78 minutes

Step-by-step explanation:

Given that;

It takes 12 liters of petrol to our to race 8 go-karts for 20 minutes at a costs of £1.37 per liter, form a table as;

Liters of petrol go-kart races minutes cost per minute

12 8 20 1.37

18 6? 1.37

Perform cross-product as;

=12*8*20*1.37) / 18*6*1.37

=2630.4/147.96

=17.78 minutes