To use equivalent ratios to find the number of grapes Reza ate yesterday, we need to set up a ratio comparing the number of grapes he ate today to the number of grapes he ate yesterday.
Let's start by assigning a variable to represent the number of grapes Reza ate yesterday. Let's call it "x".
According to the problem, Reza ate 20 grapes today, which is 400% as many grapes as he ate yesterday.
To find the number of grapes Reza ate yesterday, we can set up the following ratio:
20 grapes today / x grapes yesterday = 400% / 100%
Since 400% is equal to 4, 400% / 100% simplifies to 4/1.
So, the equivalent ratio is:
20 / x = 4 / 1
Now we can cross-multiply and solve for x:
20 * 1 = x * 4
20 = 4x
Dividing both sides of the equation by 4:
20 / 4 = 4x / 4
5 = x
Therefore, Reza ate 5 grapes yesterday.
Today, Reza ate 20 grapes, which was 400% as many grapes as he ate yesterday. Explain how to use equivalent ratios to find the number of grapes Reza ate yesterday.
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