# Chain Rule - Aptitude Questions and Answers Part 4

**16. Going at a particular rate, 6 machines can cut 270 pieces of fabric per minute. At the same rate, how many pieces of fabric can 10 such machines cut in 4 minutes?**
a. 648

b. 1800

c. 2700

d. 10800

**17. There are two wheels with 6 cogs and 14 cogs respectively. When the smaller wheel takes 21 revolutions, how many revolutions would the larger one take?**
a. 4

b. 9

c. 12

d. 49

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