Work = 60 units. A does 5/day, B does 7/day. Time = ?
Correct answer: D. 10
- A. 5
- B. 6
- C. 8
- D. 10
Explanation
The correct answer is D. A and B together can complete 12 units of work per day (5 units by A and 7 units by B). Since the total work to be done is 60 units, you divide the total work by the combined daily rate: 60 ÷ 12 = 5 days. Therefore, the time required is 5 days. Other options are incorrect as they either assume an incorrect total work completed or do not align with the calculation of 60 ÷ 12.
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