Quantitative Aptitude - Arithmetic Ability Questions

What is the average of all numbers between 11 and 80 which are divisible by 6?

Sum of four times a fraction and 6 times its reciprocal is 11. What is the fraction?

A sum of Rs 15200 is divided into two parts. The simple interest on first part at the rate of 25% per annum is equal to the simple interest on second part at the rate of 13% per annum. What is the interest (in Rs) of each part?

What is the ratio of simple interest earned on certain amount at the rate of 12% p.a. for 9 years and that for 12 years?

If the selling price is Rs 728 after getting a discount of 9%, what was the marked price?

In Δ ABC, the median AD is 8 cm and CB is 16 cm, measure of angle CAB is_____ .

O is the circumcentre of ΔABC. If AO = 8 cm, then the length of BO is

Speed of a boat along and against the current are 14 kms/hr and 8 kms/hr respectively. The speed of the current is