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4 years ago

11

Alyce has 60 marbles. of the marbles, 45 are red and the rest are black. what is the ratio of the number of black marbles to the

number of red marbles

1 answer:

Irina18 [472]4 years ago

4 0

60-45=15 so there are 15 black marbles and 45 red marbles

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mary is making a batch of chocolate chip cookies the recipe calls for 9 cups of flour and 2 4/7 cups of sugar she isshort on flo

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Mary added $$24 \frac{1}{2}$ cups of sugar.

<h3>How to estimate how much sugar should Mary add?</h3>

The ratio of flour to sugar exists at 9 cups: 2 4/7 cups

Utilizing equivalent ratios, given that 7 cups of sugar was utilized,

Let cups of flour needed = x such that our equation becomes

flour/sugar $$ =\frac{9}{2\frac{4}{7} }=\frac{x}{7}$

$$ \frac{9}{2\frac{4}{7} }=\frac{x}{7}$

Convert mixed numbers into improper fractions

$$2 \frac{4}{7}= \frac{18}{7}$

simplifying the above equation, we get

$$\frac{9}{\frac{18}{7} } = \frac{x}{7}$

= $$24 \frac{1}{2}$

x = 24.5

The value of x = 24.5.

Therefore, $$24 \frac{1}{2}$ cups of sugar exist required.

To learn more about improper fractions refer to:

brainly.com/question/387381

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Ostrovityanka [42]

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Step-by-step explanation:

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