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

there will be 35 boys in each team. : )

8 2/3 is the answer

step-by-step explanation: just use a calculator