Mathematics
Medium
Question
A and B together can complete a work in 1.2 days,. A alone can complete it in 20 days. If B does the work only for half a day daily, then in how many days A and B together will complete the work ?
A
10 days
B
11 days
C
15 days
✓ Official correct answer
D
20 days
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A
10 days
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B
11 days
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C
15 days
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D
20 days
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