Question
Tap A and Tap B fill a drum of volume 494 liters in 19
minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the cistern 49.4 minutes. Find x-y.Solution
A+B B Time 19 : 49.4 Efficiency 49.4 : 19 26 : 10 Efficiency of A+B = 26 Efficiency of B = 10 Efficiency of A = 26 – 10 = 16 Ratio = x:y = 16:10 So, x – y = 16 – 10 = 6
The ozone layer absorbs harmful Ultra Violet radiation from sun. It is present in the upper portion of
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Which of the following country approved the commercial cultivation of GM Mustard?
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