Let the total work be 60 units. So, efficiency of 'A' = 60 ÷ 30 = 2 units/day So, efficiency of 'B' = 3 X 2 = 6 units/day And efficiency of 'C' = 6 ÷ 2 = 3 units/day Let the number of days for which 'B' worked alone be 'd'. So, (d X 6) + (11 - d) X (2 + 3) = 60 Or, 6d + 55 - 5d = 60 Or, 'd' = 5 So, 'B' worked alone for 5 days So, 'B' should've joined them after (11 - 5) = 6 days
The Brahmo Samaj set up in ______.
Who became Mexico's first female president according to the National Electoral Institute's recent announcement?
Which country has emerged as India's third largest exports destination during 2022-23, after the US and UAE?
SIMBEX Exercise is being organized between the Navy of India and which country?
Which is the first airport in the North-East to get 'Digi Yatra' facility recently?
The Regional Rapid Transport System (RRTS) Corridor has been approved between which of the following?
What was the land given to people in exchange for services called during the Gorkha period?
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When was the Uttarakhand Open University established?
