Math project i really need with an explanation step process ! i need to find percent change!

How many bananas are in a fruit bowl that has 200 total apples and bananas if there are 31 bananas for every 93 apples

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

Diane’s bank is offering 5% interest, compounded monthly. if diane invests $10,500 and wants $20,000 when she withdrawals, how long should she keep her money in for? round to the nearest tenth of a year.