A number if required by 25% becomes 225. By what percent should be increased so that it becomes 375?

If 4tanθ=3,the  value of $$ \left({4sinθ-2cosθ\over4sinθ+2cosθ}\right) $$ is:-

A trader purchased a gift box for Rs. 150. What should be the marked price on the gift box so that after allowing a discount of 10 %, he makes a profit of 10 %? 

The cost of levelling a ground in rectangular shape for a proposed garden at 80 paise per square meter is Rs.132 and the cost of fencing the same along its perimeter is Rs.78 at Rs.1.50 per meter. If the garden is extended in rectangular shape with its sides as cubes of the originally proposed garden, what will be the perimeter of the garden after extension?

What would be the printed price of a wallclock purchased at ₹380, so that after giving 5 % discount, there is 25 % profit? 

A tradesman allows a discount of 15 % on the marked price. How much above the cost price must he mark his goods as to gain 19 %? 

Balls of marbles of diameter 1.4 cm are dropped into a cylindrical beaker containing some water and fully submerged. The diameter of the beaker is 7 cm. Find how many marbles have been dropped in it if the water rises by 5.6 cm?

Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case. Then sum of the digits in N is: