The reflection of a clock in a mirror shows 3:48. What will the reflection show 20 minutes later?

3:28Correct answerYour answer4:08Correct answerYour answer8:12Correct answerYour answer8:32Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

First find the actual time: $11{:}60 - 3{:}48 = 8{:}12$ .
20 minutes later the actual time is 8:32.
Reflection of 8:32 $= 11{:}60 - 8{:}32 = 3{:}28$ .

Worth noting

4:08 adds the 20 minutes to the REFLECTION; a mirror clock runs backwards, so its reading goes down as time passes. 8:32 is the actual time, not the reflection.

Concept: Time passing in a mirror image
Typical timeTypical: 120 s
Your timeYours: —

The rule this testsAngles between the hands

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The reflection of a clock in a mirror shows 3:48. What will the reflection show 20 minutes later?

Explanation