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Unformatted text preview: I and II only
(E) I, II, and III
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 than gear P ?
P由1由由由10由 => 60/10=6由/由
Q由1由由由40由 => 60/40=1.5由/由
(T/6) = (T/1.5) 6 T=12
[?] 6641!item!187;#058&005112 In the circle above, PQ is parallel to diameter OR, and OR has length 18. What is the length of minor arc PQ ?
(A) (B) (C) (D) (E) 53.
Mary purchased 3 theater tickets with an average (arithmetic mean) price of $8. If Mary also purchases a fourth theater ticket with a price of $16, what is the average price of all 4 theater tickets?
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- Winter '05