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28.05.2020 •
Mathematics
I wrote these questions as one big question but decided to do them separately...
It took Jake 28 minutes to run 5km last month. This month he run 5km in 21 minutes. By what percentage had Jake improved his running time?
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Ответ:
Step-by-step explanation:
Given
Required
Use the GCF to write it as a distributive property
First, we find the GCF of 75 and 45
The common factor is:
So,
becomes
Factorize
Hence, the sum has been rewritten as