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A holiday costs £1900. Work out the price after a 9% discount.
2 answers:
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Answer:
You need to use A, B, and C.
Step-by-step explanation:
Let's treat the units as variables. I'll illustrate why in a moment.
Now, as you can see, we have a giant mess of units to deal with. This is where we can treat the units like separate variables and use a bit of algebra to make our lives easier:
So, backtracking through that entire mess, we had to use .
These correspond to the options of A, C, and B accordingly.
So you need to use A, B, and C.