Rate problems: how much in a different time

Find the amount per unit of time, then multiply by the new time.

1. A machine makes 66 litres in 3 minutes. At the same rate, how many litres does it make in 9 minutes?
2. A machine makes 60 litres in 3 minutes. At the same rate, how many litres does it make in 27 minutes?
3. A machine makes 145 litres in 5 minutes. At the same rate, how many litres does it make in 45 minutes?
4. A machine makes 35 parts in 7 minutes. At the same rate, how many parts does it make in 14 minutes?
5. A machine makes 96 bottles in 3 minutes. At the same rate, how many bottles does it make in 27 minutes?
6. A machine makes 180 parts in 12 minutes. At the same rate, how many parts does it make in 108 minutes?
7. A machine makes 200 pages in 8 minutes. At the same rate, how many pages does it make in 64 minutes?
8. A machine makes 160 metres of rope in 10 hours. At the same rate, how many metres of rope does it make in 40 hours?
9. A machine makes 132 parts in 6 minutes. At the same rate, how many parts does it make in 72 minutes?
10. A machine makes 231 litres in 11 minutes. At the same rate, how many litres does it make in 110 minutes?
11. A machine makes 60 litres in 6 minutes. At the same rate, how many litres does it make in 18 minutes?
12. A machine makes 266 litres in 7 minutes. At the same rate, how many litres does it make in 70 minutes?
13. A machine makes 432 bottles in 16 minutes. At the same rate, how many bottles does it make in 48 minutes?
14. A machine makes 464 litres in 16 minutes. At the same rate, how many litres does it make in 240 minutes?
15. A machine makes 190 pages in 19 minutes. At the same rate, how many pages does it make in 361 minutes?
16. A machine makes 1248 litres in 16 minutes. At the same rate, how many litres does it make in 256 minutes?
17. A machine makes 117 metres of rope in 9 hours. At the same rate, how many metres of rope does it make in 18 hours?
18. A machine makes 2116 bottles in 23 minutes. At the same rate, how many bottles does it make in 69 minutes?
19. A machine makes 1060 metres of rope in 20 hours. At the same rate, how many metres of rope does it make in 340 hours?
20. A machine makes 748 metres of rope in 17 hours. At the same rate, how many metres of rope does it make in 340 hours?