ATQ, Let the total work be 200x units Efficiency of each man = (200x / 200) = x units/day Total time taken = {n × (n + 1)} ÷ 2 = 200 So, n × (n + 1) = 400 Or, n² + n = 400 Or, n² + n – 400 = 0 Or, n² + 21n – 20n – 400 = 0 Or, n(n + 21) – 20(n + 21) = 0 Or, (n – 20)(n + 21) = 0 So, n = 20 Number of days required to finish the work = 20
Currently, most commonly used milk packaging materials in India is:
Another name of vitamin B9 is
the process of trashing is done In which of the of the following crops?
Cut or excised leaves remain green for long if induced to root or dipped in_____
Gundhi bug, a pest of rice attacks the plant in which stage?
The process of separating lint from seed in cotton is called ___
Which one of the following mineral elements plays an important role in biological nitrogen fixation:
Which of the following is not a Rabi season crop?
National Gopal Ratna Award is presented by which ministry?
The short range forecasting is issued twice a day and is valid for ………………………
