jiv wrote:

1) Circular Gears P and Q start rotating at the same time at constant speeds. Gear P makes 10 revolutions per minute, and gear Q makes 40 revolutions per minute. How many SECONDS after the gears start rotating will gear Q have made exactly 6 more revolutions?

a) 9

b) 10

c) 12

d) 14

e) 15

Can anyone help me get this resolved?

Thanks

In one minute - Q makes 30 more revolutions than P (40-10).

.i.e. so if Q needs to make 6 revolutions more than P - 60 sec/5 = 12 sec.

Let me know if you have any questions

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Thanks,

GC24

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