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Let the total work (LCM of 10, 20 and 30) = 60 units Efficiency of A = 60/10 = 6 units/day Efficiency of B = 60/20 = 3 units/day Efficiency of C = 60/30 = 2 units/day Work done by A and C together in 6 days = 6 × (6 + 2) = 48 units Remaining work = 60 – 48 = 12 units Efficiency of D = (12/3) – 3 = 1 unit/day Number of days taken by D to complete (1/5)th of the same work = (60/5)/1 = 12 days
An association between organisms of two different species in which one is inhibited or destroyed and the other is unaffected is called
Which of the following is best suited as catch crop?
Damaging stage of white grub is
Apomixis refers to
The breakdown of nitrites and nitrates by bacterial activity is known as:
What is the correct definition of "Fingerling" in fisheries terminology?
ACABC (Agri-Clinic or Agri-business Centre) takes training from which of the following organization?
Which machinery can be used for all purpose like sowing, field preparation, weeding etc etc.
The recently approved variety DMH 11, the 1st GM Food Crop is tolerant to ____
250 million years ago the Earth's seven continents were all grouped together into a super continent called: