holly spend 7 and 3/5 hours in school each day. her lunch period is 1/2 hour long, and she spends a total of 7/10 hour switching rooms between classes.the rest of her day is spent in 6 classes that are all same length. how long is each class?

To find out how long each class is, we need to subtract the time spent on lunch and switching rooms from the total time spent in school.

Total time spent in school = 7 and 3/5 hours
Lunch period = 1/2 hour
Time spent switching rooms = 7/10 hour

So, the total time spent on lunch and switching rooms = 1/2 + 7/10

To add these fractions, we need to find a common denominator:

1/2 = 5/10
7/10 (already in the form of the common denominator)

Now, add the fractions: 5/10 + 7/10 = 12/10

Now, subtract the time spent on lunch and switching rooms from the total time spent in school:

7 and 3/5 - 12/10 = (35/5 + 3/5) - 12/10 = 38/5 - 12/10

Convert 38/5 to the same denominator as 12/10:

(38/5)(2/2) = 76/10

Now, subtract 12/10 from 76/10:

76/10 - 12/10 = 64/10

Simplifying the fraction, we get:

64/10 = 32/5

So, the length of each class is 32/5 hours or 6 and 2/5 hours.

To find out how long each class is, we need to subtract Holly's lunch period and the time she spends switching rooms from her total time spent at school.

Holly spends 7 and 3/5 hours in school each day. Let's convert this to a mixed fraction. The mixed fraction is 7 + (3/5) = 7 + (3 * 1/5) = 7 + 3/5.

Now, let's calculate the total time spent switching rooms and subtract it from Holly's time at school. Holly spends 7/10 hour switching rooms.

7 and 3/5 - 7/10 = (35/5 + 3/5) - (7/10) = 38/5 - 7/10.

To subtract these fractions, we need a common denominator. The least common multiple (LCM) of 5 and 10 is 10. We can rewrite 38/5 as 76/10.

76/10 - 7/10 = (76 - 7) / 10 = 69/10.

So, Holly spends 69/10 hours in her 6 classes.

To find out the length of each class, we can divide the total time by the number of classes. Holly has 6 classes, so we divide 69/10 by 6.

(69/10) รท 6 = 69/10 * 1/6 = (69 * 1) / (10 * 6) = 69/60.

Therefore, each class is approximately 69/60 hours long.

Let's use decimals.

7.6 - 0.5 - 0.7 = ?

Divide the answer by 6

233