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the method given is long
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A man has three bottles of different capacities i.e. 100 ml, 200 ml and 300 ml. The 100 ml bottle is blue coloured, 200 ml bottle is green coloured while the 300 ml bottle is red coloured. Initially, the blue bottle is empty, the green bottle is full of water and the red bottle is full of cola. The following operation which consists of three steps is performed -ย Step 1: Blue bottle is filled with contents from green bottle.ย Step 2: Green bottle is filled with contents from red bottle.ย Step 3: The contents of the blue bottle are emptied into the red bottle.ย If water comes free of cost, what percent profit (approx.) Can the man earn if he sells the contents of the red bottle after two such operations?
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Nirvan and Kevin together can complete a job in 16 days. Both Kevin and Mihir, working alone can finish the same job in 12 days, Nirvan and Kevin commence work on the job, and work for 4 days, where upon Nirvan leaves, Kevin continues for 2 more days, and then he leaves too, Mihir now starts working, and finishes the job. How many days will Mihir require?
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Nirvan and Kevin together can complete a job in 16 days. Both Kevin and Mihir, working alone can finish the same job in 12 days, Nirvan and Kevin commence work on the job, and work for 4 days, where upon Nirvan leaves, Kevin continues for 2 more days, and then he leaves too, Mihir now starts working, and finishes the job. How many days will Mihir require?
unable to undedrstand
At what value of a, the sum of the square of the roots of the equation x2+(a+3)x-(a+5) = 0 is minimum?
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A class in a college consists of 20 girls and 30 boys. In the mid-semester examination, the average score of the boys was 5 higher than that of the girls. In the final exam, however, the average score of the boys dropped by 3 while the average score of the entire class increased by 2. The increase in the average score of the girls is:
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An automobile changes speed at four different points placed at equal intervals and covers 105 km in 5 hours S1,S2,S3.S4 and S5 are the 5 different speeds. S5 is 15 more than the square of S1, half of S5 is S3 , S4 is twice the sum of S1 and S2 and S2 makes up half of S3. How many hours of continuous travel will S5 require?
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There are a specific number of M ( Male Workers)ย and F (Female Workers) in a group. A F can work 1.5 times as quickly as a M. They can complete the task in five days if they collaborate. They can complete the task in four days if the number of Ms and Fs is switched around and one more F is added to the group. If the initial group of Ms and Fs work at a rate that is 250% of a M's efficiency and one F joins them who works at the original rate, how many days will it take them to do the work?
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If Labourย 1 and 2 construct a room while Labourย 3 demolish it, the room will be built entirely from the ground up in 5 days. It takes seven days to build a room from start if labourers 1 and 3 construct it while labourer 2 demolish it. It takes 35 days to build a room from scratch if Labour 2 and Labour 3 construct it while Labour 1 demolish it. How many days will it take them all together to construct the room from the ground up? Assume that it takes the same amount of days for each of them to fully ruin a room that has been constructed to 100% completion as it does to start from scratch.
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X1 and X2 are the two basins. Together, the two basins held 20 ounces of vinegar. To triple the amount of vinegar that remained in basin X1, 6 ounces of vinegar were first poured from basin X1 to basin X2, and then n ounces of vinegar were poured from basin X2 to basin X1. As of right now, the amounts of vinegar in basins X1 and X2 were 2:1. What was the initial ratio of vinegar quantity in basins X1 and X2?