What would the average of 83 and 36 be?

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank

Iwas absent when my class learned this and my teacher is to lazy to teach it to me explain this to me .

After how many years are the salaries offered by company a and company b the sameco. a starting salary $24,000 yearly increase of 3000co. b starting salary $30,000 yearly increase of 2400