Question
Aman, Rahul and Pratik working together completed a job
in 10 days. The ratio of their efficiencies is 5: 4 : 3. How many days will be required by the fastest worker alone to complete the whole work?Solution
Ratio of efficiencies = 5 : 4 : 3 Ratio of time required = 1/5 : 1/4 : 1/3 = 12 : 15 : 20 Suppose Aman, Rahul and Pratik complete the work in 12x, 15x, 20x days respectively. Then, 1/(12 x) + 1/( 15 x) + 1/( 20 x) = 1/10 (5x+4x+3x)/60x = 1/10 12/60x = 1/10 x = (12×10)/60 = 2 days Hence, the fastest worker Aman can complete the work = 12x = 12 × 2 = 24 days
Main composition of synthetic milk is
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a.   Paneer
b.   Dahl
c.   Cheese
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a.      Better the medium for growth for the microorganisms, more heat resistant are t...
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The common forms of DNA technology include
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Emission of ethylene during transportation of cut flowers causes a disorder called:
The repeated washing of fruits and vegetables might remove
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a)Â Â Â Bromaline
b)Â Â Â Ficin
c)Â Â Â Trypsin
...
Fats are solid at room temp. due to the presence of ……Fatty acids
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