Question

4.1

Twenty two litres(22ltrs) of petrol cost R300. How much will
you pay for one litre of petrol

4.2
A car travels a distance of 330 km at an average speed of 110
km/h. How long does it take the car to travel this distance?

4.3
Calculate the amount that will be in the bank after 4 years if
R2000 was invested at 9% p.a. simple interest​

Answer 1

4.1

Cost of 22ltrs of petrol = Rs300

Cost of 1ltr of petrol = 300/22

= 150/11

= Rs13.63

4.2

distance = 330km = d

speed = 110km/hr = s

time = d/s

= 330/110

= 33/11

= 3hrs

4.3

SI = principal amount × rate of interest × time

`= 2000 * (9)/(100) * 4`

`= 20 * 9 * 4`

`= 720`

Amount = Principal + SI

= 2000 + 720

= Rs2720

Answer 2

4.1 -

300/22= 13.65

so the answer is 13.63

4.2

distance/speed

330/110= 3

So it'll take 3 hours

4.3

sorry not sure for this one :(