Jack bought 5 pounds of halloween candy. he gave out 3 pounds of the candy to trick or treaters and ate 10 ouncess of the candy.

The question is not complete but the information shows that we have to find out the ounces or pounds of candies left with Jack.

First we will write the relation between pound and ounce.

1 pound = 16 ounces.

Number of pounds of candies Jack bought = 5

Number of pounds of candies he gave to trick or treaters = 3

Number of pounds left =

Now, in ounces this becomes

As, Jack ate 10 ounces of candy, he is left with ounces

Or if in pounds, he is left with pounds

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.