To find the total number of biscuits, we need to calculate the number of each type of biscuit and then sum them up.
Let's start with the ratio between digestives, custard creams, and shortbread: 253.
This ratio means that for every 2 custard creams, there are 5 shortbread, and there are 3 + 5 = 8 digestives.
Now, let's calculate the number of plain and chocolate digestives using the given ratio: 3 to 2.
For every 2 parts of plain digestives, there are 3 parts of chocolate digestives.
Since Callie has 18 chocolate digestives, we can calculate the number of plain digestives as (18 * 2) / 3 = 12.
Next, let's calculate the total number of biscuits:
- Digestives: 8 (given in the ratio)
- Custard creams: 2 * 8 = 16 (based on the ratio)
- Shortbread: 5 * 8 = 40 (based on the ratio)
- Chocolate digestives: 18
- Plain digestives: 12
Total number of biscuits = 8 + 16 + 40 + 18 + 12 = 94 biscuits.
Tell us three types of biscuits for a coffee morning she has digestives custard creams and shortbread in the ratio of 253 the digestives Harry the chocolate or plain the ratio of chocolate digestives to plain digestives is 3 to 2 Callie has 18 chocolate digestives calculate the total number of biscuits
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