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Total work = (LCM of 15 , 20 and 30) = 60 units Efficiency of A = 60/15 = 4 units/day Efficiency of B = 60/20 = 3 units/day Efficiency of C = 60/30 = 2 units/day ATQ 1st day work (A+B+C) = 4+3+2 = 9units 2ndday work (A+B) = 4+3 = 7 units 3rd day work (B+C) = 3+2 = 5 units Total work in 3 days = 9+7+5 = 21 units Total work in 6 days = 21 x 2 = 42 units Remaining work = 18units Now its turn of all three on 7thday (A,B and C) = 9units On 8th day (A and B) = 7 Remaining 2 units of work done by (B and C) = 2/5 days = 0.4 day Total time taken = 8.4 days
Which of the following statements about rainfall in India is/are correct?
1. Most of the rainfall in India is due to the South-West monsoon
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Consider the following statements concerning the Peninsular block of India:
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2. Th...
Which ocean is the smallest by surface area?
The retreating Monsoon gives rainfall to:
The "Great Barrier Reef" is located off the coast of which country?
The redshift theory is associated with ________.
Which mountain range system is the highest and most extensive in Europe?
Which countries does the Somali Current flow past in the Western Indian Ocean?
