The diagram shows the level of milk in a measuring jug that Grandma Okoye uses for a pancake recipe that serves 4 people. 0100200300400500Measuring jug (ml)...
Question 1 Report
The diagram shows the level of milk in a measuring jug that Grandma Okoye uses for a pancake recipe that serves 4 people.
- Write down the volume of milk shown in the jug, in millilitres. (1)
- Grandma wants to make enough pancakes for 10 people. Work out how much milk she needs, in millilitres. (2)
- Write your answer to part (b) in litres, correct to 2 decimal places. (2)
Answer Details
This question tests reading a volume from a measuring jug scale, scaling a recipe quantity to a different number of servings, and converting the result from millilitres to litres.
- The jug is marked every \(100\) ml, and the milk fills to the third gridline above zero, so the volume shown is \(240\) ml [1 mark].
- The amount needed per person is found by dividing by \(4\), then multiplying by the new number of people: \(240 \div 4 \times 10 = 600\) ml [2 marks].
- Since there are 1000 ml in a litre, \(600\) ml \(= 0.60\) litres (2 d.p.) [2 marks].
Scaling a recipe from one number of servings to another always multiplies by the ratio of new servings to original servings, here \(\frac{10}{4}\), applied to every ingredient.
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