I have another question.. I think one of my classmates already asked this but.. i dont know how to solve it nor what the answer is.
Mrs. Copeland works at the school 40 hours a week. Before she became a teacher, she used to work at a school 15 hours a week. By what percentage did the hours Mrs. Copeland works increase.
A. 6.25%
B. 8.75%
C. 62.5%
D. 87.5%
15 hours a week ????? typo ?????
On my question, it says 15 hours..
Mr. ¨oobleck¨ I told you I am a classmate of ¨ I need help¨ or whatever his name is
Nope. I mean 15.
Over here disliking my comments like ima care LOLL! luh boy or guh must not know that ion really care
The way I see it:
increase in hours = 40 - 15 = 25
25/15 = 1.6666... = 166.7%
so it increased by 166.7%
or the new hours is 267.7% of the old hours
check:
166.7% of 15 = 25
new hours = 15+25 = 40
or
new hours = 2.666...*(15) = 40
as oobleck noted, none of the choices are correct
To find the percentage increase in the hours Mrs. Copeland works, we need to calculate the difference between the two sets of hours (before and after) and then express that difference as a percentage of the original number of hours.
First, we subtract the initial hours (15) from the final hours (40). This gives us a difference of 25 hours.
Next, we divide this difference by the initial hours (15) and then multiply by 100 to express it as a percentage:
(25 / 15) * 100 = 166.67%
Therefore, the increase in Mrs. Copeland's working hours is 166.67%. However, none of the options provided match this calculation.
It seems like there might be an error in the given answer choices. Please check if the options have been accurately provided.
this was also done for you.
None of the choices is correct
consider how a 50% increase means that 50% is added
So, if 4 grows to 6, then since the actual change is 1/2 of 4, that's a 50% increase. 6/4 = 3/2, so the % increase is 3/2 - 1 = 1/2 = 50%
For this problem, the increase is 25
40/15 = 8/3
8/3 - 1 = 5/3, or 2.67, making a 267% increase