Last year, there were 381 students at Woodland Middle School. This year, there are 419 students. What is the percent of change?
1 answer:
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Answer:
A) 7.24 hours
Step-by-step explanation:
The together rate is the sum of each separate rate.
In this problem:
Beth's rate is 1/15(suppose there was a small typing mistake there, with 151 none of the options are correct).
Mike's rate is 1/14
The together rate is 1/x
Then
We want to find x.
15*14 = 210. So
Cross multiplication
So the correct answer is:
A) 7.24 hours