Question
A team of 40 men is assigned to finish a project within
24 days. They began the task simultaneously. To complete the project 6 days ahead of the planned schedule, how many additional men need to be recruited after the initial 6 days of work?Solution
Total amount of work = 40 × 24 = 960 units Amount of work done by 40 men in 6 days = 40 × 6 = 240 units Let ‘x’ more men are required So, (40 + x) × 12 = 720 Or, x + 40 = 60 Or, x = 20
A body is said to be in equilibrium when:
Which polymer is used in the production of bullet-proof materials?
Which one among the following statements is not true for Mammals?
Which of the following is a chemical change?
Which vitamin is also known as Vitamin-B2?
If the root mean square speed of gas molecules is doubled, the absolute temperature of the gas:
Which vitamin helps in improving night vision?
Which vitamin is essential for RBC formation?
Which of the following statements for the given chemical reaction is true?
Fe₂ O₃ + 2Al → Al₂ O₃  + 2Fe
The force which opposes the relative motion between different layers of liquid or gases is called –
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