Answer:
B which is 2/4.
Explanation:
Elin: worked for 2/4 + 1/4 = 3/4 of an hour on an assignment
Jocyln worked for 5/4 of an hour the same assignment
The difference in time is 5/4 - 3/4 = 2/4 or 1/2 hour.
Note: when you subtract fractions, the denominators must be the same. What you subtract is the numerators (top part of the fraction).