Quantitative Aptitude - Arithmetic Ability Questions

A, B and C can finish a job working alone in 20, 30 and 60 days respectively. They all work together for 1 day, then A and B quit. How many days C working alone will take to finish the remaining part of the job?

Mohan earns a profit of 20% on selling a jean at 15% discount on printed price. The ratio of the cost price to printed price of the jean is

Find the odd numbers/letters/numbers from the given alternatives.

What is the slope of the line perpendicular to the line passing through the points (-5 , 1) and (-2 , 0)?

The distance between the points (7,7) and (k,-5) is 13. Find k?

Cost of 4 pens, 6 note books and 9 files is Rs 305. Cost of 3 pens, 4 notebooks and 2 files is Rs 145. What is the cost (in Rs) of 5 pens, 8 notebooks and 16 files?

If the roots of the equation a(b – c)x2 + b(c – a)x + c(a – b) = 0 are equal, then which of the following is true?

√(1 + tan2A)/tanA is equal to