Question

1.1 Jane wants to make Spaghetti Bolognese for her family of 5 people, including herself. 1.1.1 Convert 300g to kg. 1.1.2 How many kilograms of tomato will be needed to make this recipe for her family? 1.1.3 500ml of water is needed to make the recipe. Convert this into liters. 1.1.4 The pot that will be used to make this recipe has a radius of 7cm and a height of 5cm. using the conversion 1cm3 = 1 000ml, determine the capacity of the pot in liters. (Capacity =īt x radius x radius x height where īt = 3.142)

Answer 1

Answer:

(a)0.3 kg (b)1 kg (c)0.5l

Explanation:

Part 1.1.1

$\begin{gathered} 1000g=1\operatorname{kg} \\ 1g=\frac{1}{1000}kg \\ \implies300\text{grams}=300\times\frac{1}{1000}kg \\ =\frac{300}{1000}kg \\ =0.3\operatorname{kg} \end{gathered}$

Part 1.1.2

The recipe calls for 400g of tomatoes for 2 people.

Since Jane's family consists of 5 people (including herself):

$\begin{gathered} \frac{2}{400}=\frac{5}{x} \\ 2x=5\times400 \\ x=\frac{5\times400}{2} \\ x=1000g \\ x=1\operatorname{kg} \end{gathered}$

Jane will need 1 kg of tomatoes to make this recipe for her family.

Part 1.1.3

Next, we convert 500ml to liters.

$\begin{gathered} 1ml=0.001\; l \\ 500\; ml=0.001\times500\; l \\ =0.5\; \text{liters} \end{gathered}$

500ml is 0.5 liters.

Part 1.1.4

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