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Hatshy [7]
3 years ago
11

the ratio of boys to girls in a school is 4:5 there are 22o boys in the school. How many students attend the school​

Mathematics
2 answers:
stepladder [879]3 years ago
8 0

Answer:

495 students

Step-by-step explanation:

The 4 part of the ratio is the number of boys.

Divide the number of boys by 4 to find the value of one part of the ratio.

220 ÷ 4 = 55 ← value of 1 part of the ratio, thus

5 parts = 5 × 55 = 275 ← number of girls

Number of students = 220 + 275 = 495

vodka [1.7K]3 years ago
8 0

Answer:

<h2>495 students</h2>

Step-by-step explanation:

220 \: boys \\  4:5 = 4 + 5 \\ boys \:  =  \frac{4}{9}  \times x = 220 \\  =  \frac{4x}{9}  =  \frac{220}{1}

4x = 1980 \\  \frac{4x}{4}  =  \frac{1980}{4}  \\ x = 495 \\ total \: no \: of \: students \:  = 495 \\

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A dealer earns a profit of 8$ per bag of white cement and a loss of 5$ per bag of grey cement.
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Answer :-

  1. loss = <em> </em><em>100</em><em>0</em><em>$</em><em> </em>
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Step by step explanation :-

1#

Profit on 3000 bags of white cement sold = 3000 × 8 = 24000

loss on 5000 bags of grey cement sold = 5000 × 5 = 25000

<u>Alternatively</u><u>:</u><u> </u>

  • Net loss = ( 25000 - 24000 ) = 1000$
  • profit/ loss = $ [3000 × 8 - 5000 × 5 ]
  • $ [24000 - 25000]
  • -1000$

<em>As</em><em> </em><em>the</em><em> </em><em>result</em><em> </em><em>of</em><em> </em><em>transaction</em><em> </em><em>is</em><em> </em><em>negative</em><em>/</em><em> </em><em>loss</em><em> </em>

  • Loss = 1000$

2#

  • Loss on the scale of 6400 grey bags = 6400 × 5 = 32,000

<em>In</em><em> </em><em>order</em><em> </em><em>to</em><em> </em><em>have</em><em> </em><em>no</em><em> </em><em>profit</em><em>, </em><em> </em><em>profit from the </em><em>Cello </em><em>white cement should be 32</em><em>0</em><em>0</em><em>0</em><em>.</em><em> </em>

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<em>4000 why cement bags and 6400</em><em> </em><em>grey</em><em> </em><em>cement</em><em> </em><em> </em><em>bags</em><em> </em><em>are sold in order to have no profit and </em><em>n</em><em>o</em><em> </em><em>loss </em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>~</em>

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2 years ago
Ow is the product of 3 and –2 shown using integer tiles?
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The correct answer is option C which is 3 sets of 2 negative tiles.

<h3>What is multiplication?</h3>

Multiplication is the process of determining the product of two or more numbers in mathematics.

We have the product of 3 and -2. We can represent this as 3 is equivalent to -2 negative tiles.

When we add -2 three times -2 - 2 -2 = -6 we will get -6 that is 3 sets of 2 negative tiles.

So when we multiply it by 3, we end with 3 sets of 2 negative tiles. This is because the order of the factors does not change the product.

Therefore the correct answer is option C which is 3 sets of 2 negative tiles.

To know more about multiplication follow

brainly.com/question/10873737

#SPJ1

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