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3 years ago

There are 15 more girls than boys in a summer camp. There are 135 campers in all. How many boys were there?

Mathematics

2 answers:

a_sh-v [17]3 years ago

6 0

65 boys 75 girls i just did guess and check

vladimir2022 [97]3 years ago

4 0

Close but there would only be 60 boys and 75 girls … 75 - 60 =15 and 75 +60= 125

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3 years ago

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Answer:

$n= 75, 582$

$n= 2300$

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Step-by-step explanation:

Generally the size of the sample sample space is mathematically represented as

$n = \left N } \atop {}} \right. C_r$

Where N is the total number of objects available and r is the number of objects to be selected

So for a, where N = 19 and r = 8

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For b Where N = 25 and r = 3

$n = \left 25 } \atop {}} \right. C_3 = \frac{25 !}{(19 - 3 )! 3!}$

$= \frac{25 *24 *23 *22 ! }{22 ! \ 3!}$

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For c Where N = 23 and r = 2

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