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nadya68 [22]
3 years ago
11

A semi trailer is being packed with boxes that are 1 1/2 feet on each edge. The cargo space of the trailer is 28 feet long, 8 1/

2 feet wide, and 9 1/6 feet high. What is the maximum number of boxes that will fit inside the trailer?
Answers:

2,016

540

2,138

633
Mathematics
1 answer:
CaHeK987 [17]3 years ago
5 0

Answer: Last option is correct.

Step-by-step explanation:

Since we have given that

Length of the cargo space of the trailer = 28 ft

Width of the cargo space of the trailer is given by

8\frac{1}{2}\\\\=\frac{17}{2}\ ft

Height of the cargo space of the trailer is given by

9\frac{1}{6}\\\\=\frac{55}{6}\ ft

Volume of the cargo space of the trailer is given by

Volume=length\times width\times height\\\\Volume=28\times \frac{17}{2}\times \frac{55}{6}\\\\Volume=2181.67\ cm^3

Now. Length of each edge of a semi-trailer is given by

1\frac{1}{2}\\\\=\frac{3}{2}\ ft

So, Volume of semi-trailer is given by

Volume=a^3\\\\Volume=\frac{3}{2}\times \frac{3}{2}\times \frac{3}{2}\\\\Volume=\frac{27}{8}\\\\Volume=3.375\ ft^3

So, Maximum number of boxes that will fit inside the trailer is given by

\frac{\text{Volume of cargo space}}{\text{ volume of semi trailer}}\\\\=\frac{2181.67}{3.375}\\\\=646.42

Hence, According to options, it is nearest to 633.

Therefore, Last option is correct.

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vredina [299]

Answer:

0.25g + 0.05g + 500g = 500.30g

Step-by-step explanation:

The first step is converting everything to grams, by rules of three. Then we add.

In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.

When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too.

When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease.

Unit conversion problems, like this one, is an example of a direct relationship between measures.

First step: 0.5kg to g

Each kg has 1000g. So

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x = 500g

0.5kg = 500g

Second step: 50mg to g

Each g has 1000mg. So:

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x = 0.05g

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Each g has 10dg. So:

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