Quantitative Aptitude - Arithmetic Ability Questions

A contractor has got two orders A and B. On one (A) he spends Rs. 25,000 and makes a bill of Rs. 30,500. On the other (B) he makes a bill keeping a profit of 20%. Which of the two orders is more profitable to him?

Of the 3 numbers whose average is 70, the first is 1/9 times the sum of other 2. The first number is

The length of a string is 8 feet and 9 inches, which is divided into 3 equal parts. What is the length of each part in inches?

A sum of Rs 10000 becomes Rs 14641 when invested at compound interest at the yearly interest rate of 20% per annum. If the compounding is done half yearly, then for how many years was the sum invested?

∆ABC is right angled at B. If m∠A = 45°, then find the value of (coseC + 1/√3).

The value of x for which the expressions 7x + 13 and 13x - 7 become equal is _____

A triangular prism has 9 edges. How many vertices does it have?

If xy = -18 and x2+ y2= 85, then find the value of (x + y).