Which pair of tasks would fill exactly 60 minutes?

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Multiple Choice

Which pair of tasks would fill exactly 60 minutes?

Explanation:
Find two tasks whose durations add up to 60 minutes. Adding the 20-minute task and the 40-minute task gives exactly 60 minutes, so they fill the hour precisely. The other two-task combinations don’t equal 60: 20 plus 25 is 45, and 25 plus 40 is 65. If all three tasks were included, the total would be 85 minutes, not 60. Therefore, the pair that sums to 60 is the 20-minute task and the 40-minute task.

Find two tasks whose durations add up to 60 minutes. Adding the 20-minute task and the 40-minute task gives exactly 60 minutes, so they fill the hour precisely. The other two-task combinations don’t equal 60: 20 plus 25 is 45, and 25 plus 40 is 65. If all three tasks were included, the total would be 85 minutes, not 60. Therefore, the pair that sums to 60 is the 20-minute task and the 40-minute task.

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