Bill has 2/3 of his left from lunch. If he eats 3/7 more of the pizza is left?

a.1/4
b.1/3
c.1/21
d.5/21
I think it's D but I'm not sure so it'll be nice if some one could check my answer thanks! 😊

2 answers

If Bill has 2/3 left and eats 3/7 more of the remainder, he would have 4/7 of 2/3 remaining. I don't see any correct alternative there. Do you have typos?
Assuming a typo, and he meant
Bill has 2/3 of his pizza left from lunch. If he eats 3/7 more, how much of the pizza is left?

2/3 - 3/7 = 14/21 - 9/21 = 5/21