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

One hundred gallons of fuel are purchased at $0.70 per gallon.

If a certain toy store's revenue in November was 3/5 of its revenue in December and its revenue in January was 1/3 of its revenue in November, then the store's revenue in December was how many times the average (arithmetic mean) of its revenues in November and January?

Gregory grossed $750 one week by working 60 hours.

If (18^a) * 9^(3a – 1)= (2^6)(3^b) and a and b are positive integers, what is the value of a?

In how many ways can 3 boys and 3 girls be seated on 8 chairs so that no two girls are together?

Three candidates contested an election and received 3644 votes, 7606 votes, and 13750 votes respectively.

A five digit number is to be formed using each of the digits 1, 2, 3, 4, 5 and 6 ONLY ONCE.

If the range R of the six numbers 4,3,14,7,10 and x is 12, what is the difference between the greatest possible value of x and least possible value of x?

If 28a+30b+31c=545. then a+b+c=?.a,b,c are natural numbers

If 10 and 15 are the lengths of two sides of a triangular region, which of the following can be the length of the third side?

What will be the vulgar fraction of 0.5

A hall 36m long and 15m broad is to be paved with stones, each measuring 3dm by 5 dm.

In a factory, an average of 65 TV's are produced per day for the fist 25days of the months.

A bookseller sells his books at a 20% markup in price.

What is the median from the below series 90, 92, 91, 88, 95, 88, 97, 87, and 98

10% of the inhabitants of village having died of cholera.,a panic set in , during which 25% of the remaining inhabitants left the village.

100 × 10 – 100 + 2000 ÷ 100 = ?

There are 5 sweets - Jammun, kaju, Peda, Ladu, Jilebi which can be consumed in 5 consecutive days.

A man takes 3 hours 45 minutes to row a boat 15 km downstream of a river and 2 hours 30 minutes to cover a distance of 5 km upstream.

A train 120 m long is running with a speed of 54 km per hour.

Two trains start from P and Q respectively and travel towards each other at a speed of 50 km/hr and 40 km/hr respectively.

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The area of a rectangle is 15 square centimeters and the perimeter is 16 square centimeters.

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Two persons A and B can complete a piece of work in 15 days and 30 days respectively.

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The ratio of two quantities is 1 to 2.

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