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Let the total work = L.C.M of 15 and 10 = 30 units Then, efficiency of ‘A’ alone = 30 ÷ 15 = 2 units/day Combined efficiency of ‘A’ and ‘B’ = 30 ÷ 10 = 3 units/day So, efficiency of ‘B’ = 3 – 2 = 1 units/day So, work done by ‘B’ alone in 21 days = 1 × 21 = 21 units So, percentage of work completed by ‘B’ = (21 ÷ 30) × 100 = 70%
Which of the following agroecological zone contain red and lateritic soils
Which one is used to make a metallic tape?
Select the correct sequence of organs in the alimentary canal of insects, starting from mouth-
(A). Ileum
(B). Oesophagous
(C). Cro...
Most adopted training system in India for grapevines is
Invisible drought occurs when
High salt tolerant crops are
(A) Dhaincha
(B) Sugarbeet
(C) Cotton
(D) Barley
Choose the most appropriate answer from the options given below:
Who proposed law of minimum?
Urban agriculture contributes to ........................?
Which of the following fodder crops is known for its gum-producing properties?
Which state is the highest producer of soyabean?