Quantitative Aptitude - Arithmetic Ability Questions

What is the average of first 19 odd numbers?

If a person walks at 15 km/hr instead of 9 km/hr, he would have walked 3 km more in the same time. What is the actual distance (in kms) travelled by him? 

In the following question, select the odd word from the given alternatives.

Find the third proportional to 6 and 12.

If I walk at 7/6 of my usual speed, then I reach my office 15 minutes early. What is the usual time taken (in minutes) by me to reach the office?

A company reduces his employee in the ratio 14 : 12 andincreases their wages in the ratio 16:18. Determine whetherthe bill of wages increases or not and in what ratio

Ravi is 12 years younger than Surya. Ravi's age is 40% of the sum of his and Surya's age. What will be Surya's age 9 years hence?

A sum fetched a total simple interest of Rs. 9648 at the rate of 12% per year in 6 years. What is the sum?