Question

5 A machine puts tar on a road at the rate of 4 metres in 5 minutes.

a) How long does it take to cover 1 km of road
b) How many metres of road does it cover in 8 hours?​

Answer 1

5 a) Total = 20.83 hrs = 20 hrs and 50 mins (1250mins total)

5 b) Total = 96 meters. = 0.096km in 8 hrs.

Explanation:

1km = 1000 meters

5 mins = 4 meters

1000/4 = 250 multiplier

250 x 5mins = 1250 minutes

1250/60 = 20hrs + 50 minutes

50 / 60 = 0.83 = 20.83hrs

b) 8 hrs = 8 x 60 = 480 minutes

480/5 = 24 multiplier of 4 meters

24 x 4 = 96 meters