Question

The time,

T
(seconds), it takes for a pot of water to boil is proportional to the amount,
A
(litres), of water.
It takes 210 seconds to boil 2.5 litres of water.
Work out how long it takes (to the nearest second) to boil 2.8 litres

Answer 1

2.5 liters = 2500 grams

210 ÷ 2500 = 0.084

2.8 liters = 2800 grams

2800-2500 = 300

300×0.084 = 25.2

25.2 + 210 = 235.2 to boil 2.8 liters