A sum of ₹ 10,000 is lent partly at 8 % and remaining at 10% per annum. If the yearly interest on the average is 9.2 %, the two parts are 

If the difference between CI and SI for 3 years at the rate of 10% is Rs 31. Find the principle.

If  $$ {A\over2}={B\over 3}={C\over 4}$$ then what is the value of $$ {A+B+C}\over C

If the interest is compounded half-yearly, then what will be the compound interest (in Rs) on a sum of Rs 10000 for 1 year at the rate of 10% per annum?

What will be the compound interest of 3 years at the rate of 5 % of 1000 rupees?

The sides of a triangle are in the ratio of 7: 9 : 12. The difference between the lengths of largest and smallest sides is 15 cm . The length of the largest sides would be: 

Simplify $$ \sqrt{(1-sin^{2}θ) ÷(1-cos^{2}θ)}$$.

The Value of $$ {\sqrt{6-\sqrt{17-2\sqrt{72}}}}$$ is closest to: