Two thirds of a pizza is shared between 5 friends bob eats twice as much as any of the others. What fraction of the pizza does bob eat ?

Answer 1

2/3 divided by 5 is 2/3 x 1/5 = 2/15.

Now Bob eats twice as much as the others, therefore you may view it as if you were to divide something in three parts, Bob eat two of those parts.

Final Answer: 2/3 * 2/15 = 4/45
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Answer 2

Bob eats twice as much as his four friends, so we have to split the 2/3 pizza into 6 equal parts
(2 pieces for Bob + 4 pieces for each of the other guys = 6 pieces)

2/3 ÷ 6 = 2/18 = 1/9

So Bob will eat 2 times 1/9 of the pizza or 2/9 of the pizza

check:
2/9 + 4(1/9)
= 2/9 + 4/9
= 6/9
= 2/3

Answer 3

Your answer is wrong Reiny. As read, Bob is one of the FIVE friends.