Multiple choice general knowledge math & puzzles

Lowell started his homework at 5:00pm. He spent 45 minutes on English, 35 minutes on math, and 1 hour 15 minutes on history. At what time did he finish all his homework?

  1. 0.815972222222222

  2. 0.770833333333333

  3. 0.763888888888889

  4. 0.8125
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Convert each time to hours and add: 45 min = 0.75 hr, 35 min ≈ 0.5833 hr, 1 hr 15 min = 1.25 hr. Total ≈ 2.5833 hours. Starting at 5:00 PM (17:00 in decimal hours), finishing time ≈ 19.5833. Converting back: 0.5833 × 24 ≈ 14 hours, or approximately 7:35 PM. Option A (≈0.816 of a day) represents the finishing time as a fraction of the day.

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