Pipe ‘A’ can fill a tank in 30 hours whereas leak ‘A’ can empty it in 45 hours. If they both operate along with pipe ‘B’, then the given tank gets filled in 20 hours. How much time is needed to fill the given tank if pipe ‘B’ and leak ‘A’ work together?
Let the capacity of the tank be 90 litres {LCM (30 and 45)} Efficiency of pipe ‘A’ = 90 ÷ 30 = 3 litres/hour Efficiency of leak ‘A’ = 90 ÷ 45 = 2 litres/hour Combined efficiency of pipe ‘A’ and leak ‘A’ = 3 – 2 = 1 litre/hour Combined efficiency of pipe ‘A’, ‘B’ and leak ‘A’ = 90 ÷ 20 = 4.5 units/hour Efficiency of pipe ‘B’ = 4.5 – 1 = 3.5 units/hour Time taken by pipe ‘B’ and leak ‘A’ to fill the tank = 90 ÷ (3.5 – 2) = 60 hours
Minimum Support Price (MSP) was introduced in India in which year?
Soil fertility does not depend on:
Which among the following fertilizers is least likely to affect the Soil pH?
The new name of VLW is:
Flame cultivation is used in which of the following crops
Best suited temperature for bajra cultivation is
A. 10 - 15 °C
B. 27 - 30 °C
C. 5-10 °C
D. 21 - 25 °C
Central Institute of Post Harvest Engineering and Technology (CIPHET) is located at.
Pulse crop gown for grain, fodder and green manure is:
Richest source of Vitamin C
Photomorphogenesis can be defined as: