Answer:
she spent studying 5 3/10 hours
Step-by-step explanation:
We know that Sam spent 3 and a half hours studying on Monday, and that he spent 1 hour and 4 fifths studying on Tuesday.
to know the total number of hours we simply have to add these 2 amounts
3 1/2 + 1 4/5 =
In order to make the sum we have to find a common denominator between the 2 fractions
to know the common denominator we are going to multiply both denominators
2 * 5 = 10
10 is the common denominator between 2 and 5 that we are going to use, now we only have to express those fractions with a denominator of 10
1 / 2 = (1 * 5) / (2 * 5) = 5 / 10
4 /5 = (4 * 2) / (5 * 2) = 8 / 10
now we replace our fractions with these equivalent fractions
3 1/2 + 1 4/5 =
3 5/10 + 1 8/10 = 4 13/10 = 5 3/10
she spent studying 5 3/10 hours
