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m_a_m_a [10]
2 years ago
13

In a class, there are 15 boys and 20 girls. What is the ratio of boys to girls in this class?

Mathematics
2 answers:
Reptile [31]2 years ago
6 0

Answer:

3:4

Step-by-step explanation:

15/20 reduced as much as possible is 3:4

vaieri [72.5K]2 years ago
3 0

Answer:

3:4 is the answer by dividing 15 and 20

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Parking lot has 121 spots. Ratio of senior to junior is 7 to 4. How many spots go to each grade level?
Andrej [43]
I am going to build a chart this is best when using ratios 

              seniors    junior  total
                 7              4       
                 *?             *?     *?
    Totals                          121   

The way we fill out this chart is that we add the rows and multiply the columns. 

So we add 7 + 4 and fill it in our chart we get 11 

            seniors    junior  total
                 7              4       11
                 *?             *?     *?
    Totals                          121   

now to find the *? need to divide 121/11 to get *?

121/11 = 11

so now our chart looks like this 
            seniors    junior  total
                 7              4       11
                 11            11     11
    Totals                          121   

Now we multiply each column 

so
7 * 11  = 77
 4*11 = 44

now our chart look like this 

            seniors    junior  total
                 7              4       11
                 11            11     11
    Totals     77           44      121   

so seniors get 77 spaces 
and juniors get 44 spaces. 

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Step-by-step explanation:

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Setler [38]

Answer:

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Step-by-step explanation:

As we know that

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It will take 3 men 20 days to complete the job.

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