Maria exercises for [tex]1 \frac{5}{6}[/tex] hours every Saturday. If she runs for [tex]\frac{3}{4}[/tex] of that time, how many hours does she run each Saturday?

A. [tex]1_{12}^1[/tex]
B. [tex]1 \frac{1}{8}[/tex]
C. [tex]1 \frac{3}{8}[/tex]
D. [tex]1 \frac{1}{2}[/tex]



Answer :

To determine how many hours Maria runs each Saturday, we start by figuring out the time she spends exercising and then take [tex]\(\frac{3}{4}\)[/tex] of that time.

1. Convert the time Maria exercises to a decimal:

Maria exercises for [tex]\(1 \frac{5}{6}\)[/tex] hours. We can convert this mixed number to an improper fraction and then a decimal value:

[tex]\[ 1 \frac{5}{6} = 1 + \frac{5}{6} = 1 + 0.8333\ldots \approx 1.8333 \][/tex]

So, Maria exercises for approximately [tex]\(1.8333\)[/tex] hours every Saturday.

2. Calculate [tex]\( \frac{3}{4} \)[/tex] of Maria’s exercise time:

To find out how long she runs, we multiply [tex]\(1.8333\)[/tex] by [tex]\(\frac{3}{4}\)[/tex]:

[tex]\[ 1.8333 \times \frac{3}{4} = 1.375 \][/tex]

Therefore, Maria runs for approximately [tex]\(1.375\)[/tex] hours each Saturday.

3. Convert [tex]\(1.375\)[/tex] hours to a mixed number:

The decimal [tex]\(1.375\)[/tex] can be converted back to a mixed number. We need to express [tex]\(0.375\)[/tex] as a fraction:

[tex]\[ 0.375 = \frac{3}{8} \][/tex]

Therefore, [tex]\(1.375\)[/tex] in mixed number format is:

[tex]\[ 1 \frac{3}{8} \][/tex]

4. Match the calculated running time with the given options:

Let's look at the provided choices:

A) [tex]\( 1 \frac{1}{12} \)[/tex]

B) [tex]\( 1 \frac{1}{8} \)[/tex]

C) [tex]\( 1 \frac{3}{8} \)[/tex]

D) [tex]\( 1 \frac{1}{2} \)[/tex]

Based on our calculation, the correct answer is:

[tex]\[ \boxed{C \; 1 \frac{3}{8}} \][/tex]