Q&Answers: Math/Chemistry/Physics Problems + Solutions

This year, MBB Consulting fired 9% of its employees and left remaining employee salaries unchanged.

If the cost price of 50 articles is equal to the selling price of 25 articles, then the gain or loss percent is?

If the positive integer x is a multiple of 1 and the positive integer y is a multiple of 7, then xy must be a multiple of which of the following?

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If the simple interest on a certain sum of money for 5 years is one–fifth of the sum, then the rate of interest per annum is

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Ayesha's father was 30 years of age when she was born while her mother was 22 years old when her brother four years younger to her was born.

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How much time will a train of length 250 m moving at a speed of 72 kmph take to cross another train of length 300 m, moving at 36 kmph in the same direction?

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Beth received 2/5 of the votes cast in a certain election.

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60, 67, 63, 15, 61, 10, 15 Which of the following numbers is lower than the median but greater than the mean of the set of the numbers in the list?

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A man can row 50 km upstream and 72 km downstream in 9 hours.

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What is the smallest positive integer x such that 120-x is the cube of a positive integer?

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20% of the students in a class failed in an examination.

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A 16% stock yielding 8% is quoted at?

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The areas, in kilometers squared, of some countries are given below.

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a and b are two bus stations 400 km apart. if two separate buses depart from both stations and travel towards each other, at what time do they meet each other given that the first bus left at 8 am and travels at a speed of 70 km/hr while the second bus left at 9 am and travels at a speed of 40 km/hr.

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Solution A is 20% barium and Solution B is 80% barium.

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If a coin is tossed twice, what is the probability that the coin lands on heads on both tosses?

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Seven years ago the average age of a family of 2 members was 23 years.

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A license plate in the country Kerrania consists of four digits followed by two letters.

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Average of 10 matches is 32, How many runs one should should score to increase his average by 4 runs.

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In a rectangular coordinate system, points O (2,0), P (2,6), and Q (8,0) represent the sites of three proposed housing developments.

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A man can ride on motorcycle at 50 kmph upward road and 100 kmph downward road.

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A train 125 m long passes a man, running at 4 km/hr in the same direction in which the train is going, in 10 seconds.

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Working at their respective constant rates, machine A makes 100 copies in 12 minutes and machine B makes 150 copies in 15 minutes.

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A train crosses a bridge of length 150 m in 7.5 seconds and a lamp post on the bridge in 2.5 seconds.

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