A clock is set right at 6 a.m. It gains 10 minutes in 24 hours. What will be the right time when the clock indicates 11 a.m. on the next day?
Detailed Explanation:
The clock gains 10 minutes in 24 real hours, so in 24 real hours it shows 24 hours 10 minutes. From 6 a.m. to 11 a.m. next day = 29 hours on the fast clock.
If the clock shows 29 hours, real time elapsed = 29 ÷ (24 + 10/60) = 29 ÷ (1450/60) = (29 × 60)/1450 × 24 = 28 hours 48 minutes. Adding this to 6 a.m. gives 10:48 a.m.
Therefore, the correct time is 48 minutes past 10, making Option 1 the correct answer.
Question 3 of 5 Calendar & Clock
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