Answer:
150 g butter
135 g caster sugar
15 g chocolate chips
Explanation:
There are many ways to solve this problem. I'll tell 2 methods to solve this. Let's use my favourite method first: Unitary method.
So, there are 200 g butter, 180 g caster sugar, 400 g plain flour and 20 g chocolate chips.
Let's find how many grams of each ingredients we'll have for 1 g plain flour.
So first let's MAKE 400 g plain flour into 1 g plain flour.
400/400=1 g plain flour.
Now, since you divided one ingredient, do the same for each.
200/400=0.5
180/400=0.45
20/400=0.05
So now, if Andrew had 1 g of plain flour, he'll need to use
- 0.5 g butter
- 0.45 g caster sugar
- 0.05 g chocolate chips
So, we'll just multiply each with 300.
- 0.5*300=150
- 0.45*300=135
- 0.05*300=15
So here you go! For 300 grams of plain flour, he'll need 150 g butter, 135 g caster sugar and 15 g of chocolate chips!
The second method is:
Lets take a ratio, butter : caster sugar : plain flour : chocolate chips
Now,
200:180:400:20
? : ? : 300 : ?
Now, we directly got from 400 to 300.
Lets divide 300 by 400.
That will give us 3/4 (or 0.75)
So now to equal everything in the ratio, first let's multiply plain flour first.
400 * 3/4 = 300
then lets do the same for other ingredients.
200 * 3/4 = 150
180 * 3/4 = 135
20 * 3/4 = 15
So now, let's replace the values.
First, it was 200:180:400:20, and now 150:135:300:15
HOPE THIS HELPS!