Michelle needs 50 g of sugar to make 15 biscuits. She also needs
three times as much flour as sugar
two times as much butter as sugar
Michelle is going to make 75 biscuits.
(a) Work out the amount of flour she needs.

450 grams of flour.

Step-by-step explanation:

to make 15 biscuits

- 50 g = sugar

- 3 * sugar = flour

- 2 * sugar = butter

To find the amount of butter and sugar she needs, substitute in the amount of sugar she needs to fin the other values

- 3 * sugar = flour

= 3 * 50 = flour

= 150g = flour

- 2 * sugar = butter

= 2 * 50 = butter

= 100g = butter

In this problem, 3 times the given recipe is going to be made (15 * 3 = 75) hence you need to triple all the ingredients

- 50g * 3= sugar = 150

- 150g * 3 = flour = 450

- 100g * 3 = butter = 300

So 450g of flour is needed to make 75 biscuits.

step-by-step explanation: