400 chickooes were bought at ₹1,250 per hundred and were sold at a profit of ₹800. Find the selling price (in ₹) per dozen of chickooes.
Mohan invests a sum of ₹5,400 and Varun invests a sum of ₹9,400 at the same rate of simple interest per annum. If, at the end of 6 years, Varun gets ₹480 more interest than Mohan, then find the rate of interest per annum (in percentage).
What is the volume of a sphere of radius 3\(\sqrt{2}\) cm?
73\(\sqrt{2}\)π cm³
71\(\sqrt{2}\)π cm³
70\(\sqrt{2}\)π cm³
72\(\sqrt{2}\)π cm³