Question

Dan finished his chemistry assignment in 3/4 hours. Then he completed his English assignment in 1/5 hours. what was the total amount of time Dan spent doing these two assigments?

Answer 1

The answer is

19/20 hours

Answer 2

Explanation:

To find the total amount of time Dan spent doing his chemistry and English assignments, we need to add the time he spent on each task.

Dan spent 3/4 hours on his chemistry assignment, and 1/5 hours on his English assignment. To add these two fractions, we need to find a common denominator. The least common multiple of 4 and 5 is 20, so we can rewrite the fractions with 20 as the denominator:

3/4 hours = 15/20 hours

1/5 hours = 4/20 hours

Now we can add these fractions:

15/20 hours + 4/20 hours = 19/20 hours

So the total amount of time Dan spent doing his chemistry and English assignments is 19/20 hours.