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A Toyota sedan with a 40.5 L40.5\,\text{L} petrol tank capacity runs out of petrol. Three containers, each with a capacity of 13.25 L13.25\,\text{L}, are used to fill up the tank. How many millilitres (mL)(\text{mL}) of petrol are still needed to fill the tank to capacity?

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Q. A Toyota sedan with a 40.5 L40.5\,\text{L} petrol tank capacity runs out of petrol. Three containers, each with a capacity of 13.25 L13.25\,\text{L}, are used to fill up the tank. How many millilitres (mL)(\text{mL}) of petrol are still needed to fill the tank to capacity?
  1. Convert to Millilitres: Convert the tank capacity from liters to millilitres.\newline11 liter =1,000= 1,000 millilitres\newline40.540.5 L =40.5×1,000= 40.5 \times 1,000 mL\newlineCalculation: 40.5×1,000=40,50040.5 \times 1,000 = 40,500 mL
  2. Calculate Petrol Amount: Calculate the total amount of petrol that can be put into the tank using the three containers.\newlineEach container has a capacity of 13.25 L13.25\,\text{L}, which needs to be converted to millilitres.\newline13.25 L=13.25×1,000 mL13.25\,\text{L} = 13.25 \times 1,000\,\text{mL}\newlineCalculation: 13.25×1,000=13,250 mL13.25 \times 1,000 = 13,250\,\text{mL} per container
  3. Total Petrol from Containers: Calculate the total amount of petrol provided by the three containers.\newlineTotal petrol from containers = 3×13,250 mL3 \times 13,250 \, \text{mL}\newlineCalculation: 3×13,250=39,750 mL3 \times 13,250 = 39,750 \, \text{mL}
  4. Calculate Petrol Needed: Subtract the total amount of petrol provided by the containers from the total tank capacity to find out how much more petrol is needed.\newlinePetrol needed = Tank capacity - Petrol from containers\newlineCalculation: 40,500 mL−39,750 mL=750 mL40,500 \, \text{mL} - 39,750 \, \text{mL} = 750 \, \text{mL}

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