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tigry1 [53]
3 years ago
9

The expressions p-0.15p can be can be used to calculate the final cost of an item that has a price of p and is discounted 15%. W

hat is the final cost of an item that has an original price of $23?
Mathematics
1 answer:
lora16 [44]3 years ago
3 0

Answer:

The original cost is $19.55

Step-by-step explanation:

What we want to do here is calculate the final cost, given the original price

What we have to do here is to substitute the value of $23 for p

This we have as;

23-0.15(23)

= 23-3.45

= $19.55

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Recipe is for 24 pieces, and required quantity is 16.

So the ratio is 16/24 = 2/3 means we need to reduce all ingredients to 2/3 of the given quantities. Not all recipes can be reduced prorata, but we will assume it can be done. A word of caution: the measurement of quantities will become awkward (like 3/8 of a teaspoon of salt, etc). The practical way is to make the full recipe, and invite friends to take home the remainder.

Here's the scaled recipe

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