Question

Q8 A machine uses 300g of fuel in 8 seconds.

At this rate, how many tonnes of fuel will it use in a day?
A) 1.18
B) 3.24
C) 4.46
D) 5.12

Answer 1

B

Explanation:

1 day= 86400 seconds

300g - 8 seconds

x - 86400 seconds

use cross multiplication

86400 × 300= 8x

8x = 25,920,000

x= 3,240,000 grams

to convert grams into tonnes you simply have to divide the grams value by 1,000,000 which equals to 3.24 tonnes