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IMSO 2005 Mathematics - International Exploration Question 6

IMSO Maths · IMSO 2005 Mathematics - International Exploration

Question 6

The hands of the clock shown form a right angle. The estimated time, to the nearest minute, is 12:16.

(a) When will the hands form a right angle for the first time after 12:16? Estimate to the nearest minute.
(b) After 1 o’clock, when will the hands form a right angle for the first time? Estimate to the nearest minute.
(c) From 2:00 a.m. to 12 noon of the same day, how many times will the hands form a right angle?

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