3 years ago

331 student went on a field trip. Six buses were filled and 7 traveled in cars. How many students were in each bus

Mathematics

1 answer:

12345 [234]3 years ago

7 0

It would be 331-7= 324 then 324/6= 54 so the answer would be 54

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3 years ago

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Marat540 [252]

Answer: 63%

Step-by-step explanation:

<u>First step</u>

Find the 10th year rate of loss that will make the average of loss over the 10 years to equal 38.0%.

Assume this rate is x;

$\frac{(36.2 + 29.0 + 46.2 + 37.5 + 40.9 + 40.0 + 32.6 + 40.5 + 40.1 + x)}{10} = 38.0\\\\\frac{343 + x}{10} = 38\\\\x = 380 - 343\\\\x = 37$

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<u>Second step - Survival rate</u>

The survival rate is calculated by;

= 1 - rate of loss

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