Work done by A in one day = 1/12. Work done by B in one day = 1/15. Combined work in one day = (1/12 + 1/15) = (5 + 4) / 60 = 9/60 = 3/20. Time taken to finish the work together = 20/3 days = 6.67 days. Correct option: a) 6.67 days
Which of the following is the capital of Romania?
With reference to Mangroves, consider the following statements:
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Guru Bipin Singh is renowned for his contributions to which classical dance form?
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Which nation initiated the Chang'e-6 mission to gather samples from the moon's far side?
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