Percentage Questions from A* Maths Problem

Answers (without working) are placed in comments.

1) A shopkeeper offered a watch to his customer at a discount of 20%. After much bargaining, the customer bought the watch ar 44% discount, giving him an additional saving of $24. What was the usual price of the watch?

2) At a fruit stall, the ratio of the number of apples to the number of pears is 5:8. If 60% of the pears are sold, what percentage of the apples must be sold so that there will be equal number of apples and pears left?

3) Yuki was reading a story book. On the first day, the number of pages she read was 20% of the number of pages unread. On the second day, she read another 30 pages of the book. As a result, the number of pages she read was 60% of the number of pages unread. How many pages did the book consist of?

4) There are some beads in 3 boxes, A, B and C. 40% of the number of beads in Box A is equal to 25% of the number of beads in Box B. The number of beads in Box C is 1/3 of the number of beads in Box B.
a) Express the number of beads in Box C as a fraction of the number of beads in Box A.
b) If 1/2 of the beads in Box B are taken out and placed into Box C, there will be 80 beads in Box C. How many beads are there in Box A?