Quantitative Aptitude - Arithmetic Ability Questions

Josna takes 4 hrs 30 min in walking a distance and riding back to some place where she started. She could walk both ways in 5 hrs 40 min. The time taken by her to ride back both ways is

At 5% simple interest per annum a certain sum yields a total amount of Rs. 2,790 at the end of 3 1/4 years. The sum invested was

What is the ratio of simple interest earned on certain amount at the rate of 12% for 6 years and that for 12 years?

If 192 pens cost is Rs.10, how many pens can be bought for Rs.5?

Average of 31 numbers is 19. If the average of first 8 numbers is 24, then what is the average of the remaining numbers?

A man spends 15% of his income. If his expenditure is Rs. 75, his income (in rupees) is:

What is the value of Sin 30- √2 Cos 30

What is the value of Sin 30° - Cosec 45°?