GCSE Secondary Maths Age 13-17 - Number: Conversion Gallons/Litres - Explained

The video tutorial explains how to convert gallons of fuel to liters and calculate the time needed to empty a fuel tank at a given rate. It involves converting 18,500 gallons to liters using a conversion factor, then dividing by the pumping rate to find the time in minutes. The final answer is rounded to the nearest minute, and the marking scheme is discussed.

What is the initial amount of fuel in the tank, and in what unit is it measured?

• 1,700 gallons

• 1,700 liters

• 18,500 gallons

• 18,500 liters

What is the conversion factor from gallons to liters?

• 1 gallon = 4.0 liters

• 1 gallon = 3.8 liters

• 1 gallon = 4.5 liters

• 1 gallon = 5.0 liters

How many liters of fuel are in the tank after conversion?

• 83,250 liters

• 85,000 liters

• 75,000 liters

• 90,000 liters

How long does it take to pump all the fuel into the plane, rounded to the nearest minute?

• 47 minutes

• 48 minutes

• 50 minutes

• 49 minutes

What is the first step in solving the problem to earn the first mark?

• Calculating the total time in minutes

• Converting gallons to liters

• Dividing the total liters by the pumping rate

• Rounding the time to the nearest minute