compound percent

A town has a population of 25,000 and grows at 7.7% every 4 months. What will be the population after 6 years? 1 year = 12 months 12 months / 4 months = 3 compounding periods per year 3 compounding periods per year * 6 years = 18 compounding periods So we have our population growth as...

Josh currently bench presses 150 lbs. He increases that amount by 10% a month for 3 months. About how much can he bench press now? We have 150(1.1)^3. We can also write this as 150(1.1)(1.1)(1.1). The 10% compounds. After 3 months, Josh benches 199.65 lbs, or approximately 200 lbs.