Here are the ingredients for making pineapple sorbet for 6 people.
800g pineapple
4 egg whites
12 lemon
100 g caster sugar
Dan makes pineapple sorbet.
He uses 22 lemons.
Work out how many people he makes pineapple sorbet for.

Eileen purchased 3.4 pounds of apples at the total cost of $19.72. if she purchases 6.2 pounds of apples at this store, how much would it cost?

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.