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4 years ago

The ratio of pencils to erasers is 1:2. There are 24 pencils and erasers in all. How many pencils and erasers are there?

Mathematics

1 answer:

Semenov [28]4 years ago

3 0

There are 8 pencils and 16 erasers.

Step-by-step explanation:

Given,

Ratio of pencils to eraser = 1:2

Total number of pencils and erasers = 24

Let,

x be the original number.

Therefore,

Number of pencils = x

Number of erasers = 2x

Thus,

x+2x = 24

$3x=24$

Dividing both sides by 3

$\frac{3x}{3}=\frac{24}{3}\\x=8$

Number of pencils = 8

Number of erasers = 2(8) = 16

There are 8 pencils and 16 erasers.

Keywords: ratio, division

Learn more about ratio at:

#LearnwithBrainly

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Do you want to be extremely boring?

Since the value is 2 at both 0 and 1, why not make it so the value is 2 everywhere else?

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Want something more fun? Why not a parabola? $f(x)= ax^2+bx+c$ .

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Notice that it works even by switching sign in the first two terms: $f(x) = -x^2+x+2$

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