Dev's bedroom clock stopped during the night when its battery died. In the morning he compares it with his phone's clock (right). For how long has the clock been stopped?

Question

Accepted Answer

7 h 15 min. The stopped clock shows 11:25 (p.m.) and the real time is 6:40 a.m. From 11:25 p.m. to 6:25 a.m. is 7 h, plus 15 min more: 7 h 15 min. (4 h 45 min is 11:25-6:40, subtracted the wrong way.)

Dev's bedroom clock stopped during the night when its battery died. In the morning he compares it with his phone's clock (right). For how long has the clock been stopped?

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