Aptitude questions and answers with explanations are provided for your competitive exams, placement interviews, and entrance tests. Quantitative Aptitude Questions and Answers contains concepts and test papers on many topics such as average, numbers, compound interests, partnership, problem on ages, calendar, boats and streams, clock, height and distance, percentage, pipes and cisterns, profit and loss, speed, time and distance, simple interest, problem on trains, time and work, etc. Aptitude Questions and Answers Theory , Exercise and Solution.