Question
A can do a piece of work in 21 days and B in 28 days. If
they together work on it for 5 days, then the fraction of the work that is left is :Â ÂSolution
A = 21 days B = 28 days LCM of (A and B) = LCM of 21 and 28 = 84 units Efficiency of A = 4 units/day and B = 3 units/day Total = 4 + 3 = 7 units/day 5 days work of A and B is 7Â Ă—Â 5 = 35 units Remaining work = 84 - 35 = 49 units Rest work / total work = 49/84 Required Fraction = 49/84 = 7/12Â
Lichens, the pioneer organisms that initiate ecological succession are actually a symbiotic association of
A subdivision on the basis of some important deviations such as surface texture, erosion, slope and stoniness is called as
Under which ministry national food security act enacted in 2013Â Â Â
The scientific name of dammer bee is _____
The example of augmentation cropping isÂ
The National Botanical Research Institute is located in:Â
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Which of the following is not the part of key theme of “The Eat Right Movement”?
Gemmae are specialized structures found inÂ
When a cross is made between offspring and its recessive parent , it is known asÂ
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