1、 At a certain shop. 1/3 of the pets are dogs and 5/1 of the pets are birds. How many of the pets are dogs?
1) There are 30 birds at the pet shop.
2) There are 20 more dogs than birds at the pet shop.
Answer： D
2、 To fill an order on schedule, a manufacturer had to produce 1,000 tools per day for n days. What is the value of n?
1) Because of production problems, the manufacturer produced only 600 tools per day during the first 5 days.
2) Because of production problems, the manufacturer had to produce 1,500 tools per day on each of the last 4 days in order to meet the schedule.
Answer：E
麻煩各位大大了 謝謝大家
