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

2 students gave an examination.

If the weight of 12 meters long rod is 13.4 kg.

If two numbers are in the ratio 2:3.

If a trader sold two cars each at Rs. 325475 and gains 11% on the first and loses 11% on the second, then his profit or loss percent on the whole is?

If a and b are both odd prime numbers and a < b, then how many different positive integer factors does 2ab have?

A tank is filled to one quarter of its capacity with a mixture consisting of water and sodium chloride.

A corporation triples its annual bonus to 50 of its employees.

A tradesman by means of his false balance defrauds to the extent of 28%?

There are 5person among whom 2are brother.

A lemonade stand sold only small and large cups of lemonade on Tuesday. 1/5 of the cups sold were small and the rest were large.

If a and b are the roots of the equation x2 - 8x + 8 = 0, then the value of a2 + b2 is:

Amit and Ian paint a wall in alternating shifts.

A train running at a speed of 60 kmph crosses a pole in 9 seconds.What is the length of the train?

In a group of hats consisting of only blue hats, green hats, and purple hats, the ratio of blue hats to green hats to purple hats is 7:4:12.

A sum of money at simple interest amounts to Rs. 2240 in 2 years and to Rs. 2600 in 5 years.

If M and N are non-zero integers, and M/N > 1, then which of the following must be true?

A man saves 20% of his monthly salary.

What should be added to 4750 so that it may become a perfect square?

Ayesha's father was 29 years of age when she was born while her mother was 23 years old when her brother three years younger to her was born.

There are three secretaries who work for four departments.

A train 110 m long is running with a speed of 27 km/hr.

A reduction of 35% in the price of oil enables a house wife to obtain 5kgs more for Rs.800, what is the reduced price for kg?

A person borrows Rs.5000 for 2 years at 4% p.a. simple interest.

A number exceeds 20% of itself by 40.