Quantitative Aptitude - Arithmetic Ability Questions

If 2x + 6y = 3xy and 10x -­ 3y = 4xy, find x, y.

What is the unit digit of 15+25+35+...+205 ?

In the following question, select the odd number pair from the given alternatives.

If x = 1 – y and x2 = 2 – y2, then what is the value of xy?

In an examination 65% students pass in history and 55% students pass in hindi. If 5% students failed in both the subjects, then what is the percentage of students who have passed in both the subjects?

A trader buys 800 kgs of tomatoes for Rs 7200. 10% tomatoes are damaged in transportaion. At what rate (Rs/Kg) should he sell the rest to earn 30% profit?

If A is 40% more than B, then B is how much percent less than A?

If ab-1b=cb-1c=ac-1a, then ac+ba+cb