Kisna buys a cow for ₹15,000. After one year, he sells it for ₹18,500. After one year, again he buys the same cow at ₹19,000 and sells it for ₹22,300. What is the overall profit percentage of Kisna?
A large solid cube is melted and cast into 'N' small solid spheres, each of radius 3 cm, and 'N + 2' small solid cuboids, each of dimensions 4 cm × 4 cm × 6.5 cm. If the length of each side of the large solid cube is 12 cm, then find the value of 'N'.