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

If 7 and 9 are factors of 60n, what is the minimum value of n?

If x⁄2 + 9⁄4 = 5⁄4, what is the value of x?

A train starts full of passengers at the first station it drops 1/3 of the passengers and takes 280more at the second station it drops one half the new total and takes twelve more .on arriving at the third station it is found to have 248 passengers.

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Ten years ago, P was half of Q in age.

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A school has 120, 192 and 144 students enrolled for its science, arts and commerce courses.

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Carlos is 8 years old. In 12 years, how old will he be?

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The positive integers s and t leave remainders of 2 and 3, respectively, when divided by 6. s > t.

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X and Y invest Rs.21000 and Rs.17500 respectively in a business.

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The sum of two numbers is 18.

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Bart has $150,512 dollars in his bank account.

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In a rectangular coordinate system, what is the area of a rhombus whose vertices have the coordinates (0, 3.5), (7, 0), (0, -3.5), (-7, 0)?

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Pipe P can fill a tank in 3 hours, pipe Q in 9 hours and pipe R in 18 hours.

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120 is what percent of 80?

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Someone on a skateboard is traveling 8 miles per hour.

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1393 x 1393 = ?

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A company selected 250 zip codes in Northeastern, Florida, Arizona and California in order to mail a product catalog.

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In a certain company, a third of the workers do not have a retirement plan. 40% of the workers who do not have a retirement plan are women, and 40% of the workers who do have a retirement plan are men.

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The average speed of a car decreased by 3 miles per hour every successive 8-minutes interval.

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The initial price of an article is Rs.4000 which increases 40% increse in its price in the first year,a 20% decrease in the second year and a 20% increase in the next year.

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Four of the five parts numbered (a), (b), (c), (d) and (e) in the following equation are exactly equal.

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The average of runs of a cricket player of 10 innings was 32.

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140 college students were asked in a survey if they preferred Windows or Mac brand computers.

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A small pool filled only with water will require an additional 300 gallons of water in order to be filled to 80% of its capacity.

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A sum of money lent out at S.I. amounts to a total of $590 after 2 years and to $815 after a further period of 5 years.

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