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ValentinkaMS [17]
3 years ago
7

Maya completed 15 quiz problems in 10 minutes, Andrew completed 12 quiz problems in 8 minutes, and Charles completed 16 quiz pro

blems in 16 minutes. Who completed the quiz problems at the slowest rate?
Mathematics
1 answer:
Phantasy [73]3 years ago
6 0

Answer:

Charles completed the quiz problems at the slowest rate

Step-by-step explanation:

we know that

To find out the unit rate divide the number of quiz problems by the time employed

1) Maya completed 15 quiz problems in 10 minutes

so

\frac{15}{10}=1.5\ quiz\ problems\ per\ minute

2) Andrew completed 12 quiz problems in 8 minutes

so

\frac{12}{8}=1.5\ quiz\ problems\ per\ minute

3) Charles completed 16 quiz problems in 16 minutes

so

\frac{16}{16}=1\ quiz\ problem\ per\ minute

Compare the unit rates

1 < 1.5

therefore

Charles completed the quiz problems at the slowest rate

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Howard can type 70 words per minute. At this rate, how many words can he type in<br> 15 minutes?
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Answer:

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Step-by-step explanation:  

The first bricklayer takes 15 days to build the wall, which means it builds 1/15 of the wall per day.

The second bricklayer takes 20 days to build the wall, which means it builds 1/20 of the wall per day.

So if they build the wall together, the expression below will tell how much of the wall they build per day together.

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3 years ago
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3 years ago
1/3k+80=1/2k+120 k=??
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Answer:

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Step-by-step explanation:

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So. k = 40 × 6  = 240

Hence The value of k is 240   Answer

3 0
4 years ago
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