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

If the cost price is 86% of the selling price, then what is the profit percent?

A can do a piece of work in 4 days.

A side of beef lost 50 percent of its weight in processing.

In a kilometre race, A can give B a start of 100 m or 15 seconds.

The set X = {6,7,8,9}. The set Y = {2,3,4,5}.

The average age of 32 students in a group is 14 years.

Today John is 3 times older than Mark.

A can do a piece of work in 30 days; B can do the same in 50 days.

8th Dec 2007 was Saturday, what day of the week was it on 8th Dec, 2006?

Present ages of Solomon and Arnald are in the ratio of 5:4 respectively.

In a school 10% of the boys are same in number as 1/5th of the girls. what is the ratio of boys to the girls in the school?

The compound interest on rs.30000 at 7% per annum is Rs.4347.

The sum of ages of 4 children born 4 years different each is 48 yrs.

The average age of a group of 12 students is 20years.

A certain hall contains two cuckoo clocks.

A man goes downstream at 11 kmph, and upstream8 kmph.

How many integers between 100 and 170, inclusive, cannot be evenly divided by 3 nor 5?

A chemical supply company has 60 liters of a 30% HNO3 solution.

How many 4 digit number contain number 2 ?

Denise is trying to open a safe whose combination she does not know.

3 friends A, B, C went for week end party to McDonald’s restaurant and there they measure there weights in some order In 7 rounds.

A right triangle is inscribed in a circle.

List K consists of 14 consecutive integers.

If 4x = 8y = 12z, then what is a possible sum of positive integers x, y, and z?