At the hardware store 1/2 of the nails are size 2d and 1/3 of the nails are size 4d. what fraction of the nails are either size 2d or 4d?

Alright so let's turn these fractions into fractions with common denominator

So a common denominator for both of them is 6

So 1/2 x 3/3 = 3/6

1/3 x 2/2 = 2/6

2/6 + 3/6=5/6

So 5/6 if the nails are either 2d or 4d

Either of them