Jack spends 1 1/5 as long on his homework as Jill.
Last week, Jill spent 6 1/2 hours doing homework.
How long did Jack spend doing homework?
Answer: 7 4/5
But I don't understand this question:
The week before, Jack spent 22 1/2 hours doing homework.
How long did Jill spend doing homework?
What's the answer to that one ^ ??