A contest winner is given a choice of 2 prizes:

Prize 1: $1 today, $2 tomorrow, $4 on day 3, and so on, for 30 days. Each day the winner receives twice as much as the day before

Prize 2: $1 today, $3 tomorrow, $9 on day 3, and so on, for 20 days. Each day the winner receives 3 times as much as the day before

3 answers

Steve answered this question.
http://www.jiskha.com/display.cgi?id=1431898893
but it doesnt make sense
Then we can do it the slow, old-fashioned way.
Day 1 - 1
2 - 2
3 - 4
4 - 8
5 - 16
6 - 32
etc.

Continue til you reach 30 days.

Do the same for Prize 2. Continue for 20 days.