If Manoj buys 324 toffees for Rs 486, then how many toffees should he sell for Rs 90 to make 50% profit?

The pie chart given below shows the number of shoes of 5 different brands in a multi brand store. There are total 1200 shoes.

How many shoes are there of Reebok brand?

Area of the smallest square that can circular ring enclosed Ween of area 616 cm² is 

$$ \sqrt{.081×.484\over0.0064×6.25}=?$$

Travelling at 60 km/h, a person reaches his destination in certain time. He covers 60% of his journey in 2/5^th of the time. At what speed (in km/h) should he travel to cover the remaining journey so that he reaches the destination right on time ?

If Sonu is driving a car with a speed of 20 m/s, then in what time will Sonu cover a distance of 936 km?

Five women can do a work in thirty six days. If the ratio between the capacity of a man and a woman is 3:1, then find how many days it will take 5 men to complete the same work?

A person borrows 5,000 for 2 years at 4 % per annum simple interest. He immediately lends it to another person at $$6{1\over 4}\%  $$ per annum simple interest for 2 years. His gain in this transaction is