Question

Elena ate 2/8 of a pizza and dylan ate 1/5. How much of the pizza elena and dylan ate in all?

Answer 1

2/8 + 1/5 = 9/20

=0.45, but that would say how much pizza they ate in all now would it?

So, your answer is 9/20

Answer 2

first make the 2 fractions to one common denominator,
10/40 and 8/40 and add them,
10/40 + 8/40 = 18/40
simplified, 9/20
answer- 9/20 of the pizza