BECE Mathematics 2013 Paper

Concept:Petrol consumption is directly proportional to time. So when time increases, petrol used increases in the same ratio.Explanation:Convert the time into the same unit.$1$ hour $= 60$ minutes.We are given: $45$ minutes require $150$ litres of petrol.Let the petrol needed for $60$ minutes be $x$ litres.Set up the proportion: $\frac{45}{150} = \frac{60}{x}$.Cross-multiply to solve for $x$:$x = \frac{150 \times 60}{45}$.Simplify: $x = \frac{9000}{45} = 200$.So, the car will use $200$ litres in $1$ hour.Answer: D. $200$ litres