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**A certain school had a fund raising activity. Each board member was requested to sell two (2) tickets on the first day and double the sales each day for 10 days. If Mr. Santos, a board member, met his quota. How many tickets did he sell on the 10th day? If a ticket costs 50 each and a seller is given 5% commission of the total sales. How much will Mr. Santos receive for his commission?**

Matimatix Jul 4, 2017

#2**+1 **

By "doubling the sales." I'm assuming that you mean the previous day's sales......

We can find the total number of tickets sold with this sum

10

∑ 2^{n} = 2046

n = 1

On the 10th day he would have sold 2^10 = 1024 tickets

His total sales = 2046 * .50 = $1023

Since he makes a commission of 5%, he receives $1023 * .05 = $51.15

CPhill Jul 5, 2017