A trade buys 800 kgs of tomatoes for Rs 7200.  10% tomatoes are damaged in transportation. At what rate (Rs / kg) should he sell the rest earn 30 % profit? 

If the number 247_679 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be 

Ramesh stands 40 meters away from the foot of a tower, if the angle of elevation of the sun is 60 degrees at that point, what will be the height of the tower?

What is the value of $$ {cosecθ\sqrt{1-cos^2θ}}$$.

Find the value of ∠OBE=?

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

The average weight of 24 students is 35 kg. If the weight of teacher is added the average increased by 400 gram. What is the weight of the teacher?

A certain sum amount to Rs.5832 in 2 year at 8% per annum at compound interest, the sum is