Question
A and B alone can complete a work in 20 and 80 days,
respectively. 50% of the work is completed by C in 5x days, and the remaining work is completed by A and B working together in ‘x’ days. Find the time taken by B and C to complete the whole work while working together.Solution
Time taken by A and B to complete the whole work while working together = (20 × 80)/(20 + 80) = 16 days So, x = 16/2 = 8 (Since, 50% of the work is done by A and B together) As, time taken by C to complete 50% of the work = 8 × 5 = 40 days So, time taken by C to complete the entire work = 40 × 2 = 80 days Therefore, time taken by B and C to complete the whole work while working together = (80 × 80)/(80 + 80) = 40 days
The silk fibres are held together in cocoon by a substance known as……………………
Saline soils could be improved by:-
Largest soil order in world is
During a prolonged dry spell, a farmer notices soil crusting in the field. What could be a possible consequence of soil crusting on the crops?
What is soil sickness?
What is the primary function of humus in soil?
Which of the following groups of nutrients is absorbed by plants only in anionic form?
………………………….. is designed to break up hard layers or pans without bringing them to the surface.
...When the contact of soil moisture still decreased below the wilting point in way that the water is held very tightly & may be state of vapour around soi...
According to USDA classification of salt affected soils; a soil having EC >4 mmho/cm; ESP >15; pH
