A teacher grades 27 tests in 3 hours How many tests can the teacher grade in 8 hours if he works at the same rate

Mathematics

2 answers:

larisa [96]2 years ago

5 0

Answer:

72 tests

Step-by-step explanation:

lets put this in a ratio

27 (tests) : 3 (hours)

now we simplify by dividing each side by 3

9:1

Now we must find 8 hours so multiply each side by 8

72:8

the teacher will grade 72 tests in 8 hours

Norma-Jean [14]2 years ago

4 0

Answer:

72 tests

Step-by-step explanation:

Lets find how many are graded per hour:

27 ÷ 3 = 9

9 tests per hour

9 · 8 = 72

72 tests

i hope this helped, please mark Brainliest, thank you!!

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Ymorist [56]

Answer:

Well, I'm not really sure what to do, but if you just need the numbers to multiply to get the latter numbers in the question they are: 10/11 (for the first question) and 81/80 for the second.

Step-by-step explanation:

For Question #1: You just multiply 5/11 by two to get the number that 1/2 has to multiply to get 5/11. And 5/11 * 2 is 10/11. So I guess the answer is 10/11...

For Question #2: The common denominator for them both is 180, and 4/9 times 81/ 80 is what 80/180 (4/9) has to multiply by to get 81/180.

I used the equation 4/9x=9/20

Multiplied the 9 and then divided by 4 to get the answer, which was 81/80.

***I also noticed, that 1/2 is 1/22 away from 5/11, and 4/9 is 1/180 away from 9/20.

Hope this helps!

7 0

3 years ago

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Serggg [28]

Answer:

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