What is the 15 % of 34?

A mobile plan costs Rs. 32 for 6 minutes. What is the approximate cost, in rupees, for 4 minutes?

Simplify : $$ {(2x)^{2}-(2y)^{2}-(4x)^{2}}$$

What is the value of $$ {0.55 × 4.5\over 0.81}$$ ?

Mr. Mike borrowed Rs. 8500 at 4 % per annum compound interest. The compound interest compounded annually for 2 yeas is:

A woman invests Rs. 2000 at the start of each year at 5% compound interest per annum. How much will her investment be at the end of the 2^nd year?

Mr. Kiran sold a bus for Rs.18,700 at a loss of 15 %. At what price should the bus be sold to get a profit of 15 %?

Vishnu travelled equal distances at speeds of 10 km/hr, 30 km/hr and 8 km/hr and took a total of 15.5 minute to complete. Find the total distance he travelled in km.