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3 years ago

9

If the ratio of boys to girls in a classroom is 2:3 and there are 10 boys, how many girls are there? Please answer thank you!

2 answers:

MakcuM [25]3 years ago

7 0

Answer:
15 girls

Explanation:
We know that the ratio of boys to girls in the classroom is 2:3, meaning that for every 2 boys there are 3 girls.

Now, we can set up a proportion to solve this problem.

Please see the picture attached.

I hope this helps!

weqwewe [10]3 years ago

5 0

Answer:

there are 15 girls in a classroom

Step-by-step explanation:

lets make it simple and short.

given:

ratio of boys to girls in a classroom is 2:3

there are 10 boys in a class room

find:

how many girls are there?

<u>use ratio and proportion</u>

<u> 2 </u> = <u> 3 </u>

10 girls

2*girls = 10 * 3

2 girls = 30

girls = 30 / 2

girls = 15

therefore,

there are 15 girls in a classroom

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<h3>What is an exponential function?</h3>

An exponential function is modeled by:

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b is the rate of change, as a decimal.

In this problem, considering the initial value of 4800, and that the population halves every 8 years, the equation is given by:

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The population will be of 600 when A(t) = 600, hence:

$A(t) = 4800\left(\frac{1}{2}\right)^{\frac{t}{8}}$

$600 = 4800\left(\frac{1}{2}\right)^{\frac{t}{8}}$

$\left(\frac{1}{2}\right)^{\frac{t}{8}} = \frac{600}{4800}$

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