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Johanna rode her bike 7 miles to a lake. She rode [tex]\frac{3}{4}[/tex] of the distance to the lake before lunch. How many miles did Johanna ride before lunch?

A. [tex]1 \frac{3}{4}[/tex] miles
B. [tex]2 \frac{1}{2}[/tex] miles
C. [tex]5 \frac{1}{4}[/tex] miles
D. [tex]6 \frac{1}{4}[/tex] miles


Sagot :

To determine how many miles Johanna rode before lunch, we need to calculate [tex]\(\frac{3}{4}\)[/tex] of the total distance she rode to the lake, which is 7 miles.

Here are the steps:

1. Identify the total distance:
The total distance Johanna rode to the lake is 7 miles.

2. Identify the fraction of the distance ridden before lunch:
Johanna rode [tex]\(\frac{3}{4}\)[/tex] of the total distance before lunch.

3. Calculate the distance ridden before lunch:
We multiply the total distance by the fraction to find the actual distance ridden before lunch.

[tex]\[ \text{Distance before lunch} = 7 \times \frac{3}{4} \][/tex]

4. Perform the multiplication:
[tex]\[ 7 \times \frac{3}{4} = \frac{7 \times 3}{4} = \frac{21}{4} \][/tex]

5. Convert the improper fraction to a mixed number:
[tex]\[ \frac{21}{4} = 5 \frac{1}{4} \][/tex]

So, Johanna rode [tex]\(5 \frac{1}{4}\)[/tex] miles before lunch.

Therefore, the correct answer is:
C. [tex]\(5 \frac{1}{4}\)[/tex] miles
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