P= 41-21
The final result is P= 20
Answer:


Step-by-step explanation:
We need to simplify

We collect LCM to get;

Therefore:

Also we need to simplify:

We collect LCM to get;

Therefore

Answer:
The purchase price is 71.4% of the sale price.
Step-by-step explanation:
1) 45 / 63 = 0.714
2) 0.714 * 100 = 71.4%
I didn't see part B.
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