Joe is working at a store. He gets paid 3 times more then he gets yesterday each day but loses 20 dollars". He starts with 10 dollars on April 8th. How much money will he have on April 16th?

Question

First do 10(3) - 20

Answer 1

Theses are the days to use the formula: 9, 10, 11, 12, 13, 14, 15, and 16. This is 8 days.

(It is easier to determine this by subtracting 8 from 16.)

That means you will triple the initial amount 8 times and subtract 20 eight times.

Day 9: 10*3 - 20 = 30 - 20 = 10.

This will happen each day. So you will have $10 on the 16th.

Or if you triple the pay amount each day,

10×3⁸ - 160 = 10 * 6,561 - 160 = 65,610 - 160 = 65,450.

Answer 2

Tripling the $10 and subtracting $20 will leave him with the same amount each day:

April 8th: $10

April 9th: $10(3) - 20 = $10

April 10th: $10(3) - 20 = $10

April 11th: $10(3) - 20 = $10

April 12th: $10(3) - 20 = $10

April 13th: $10(3) - 20 = $10

April 14th: $10(3) - 20 = $10

April 15th: $10(3) - 20 = $10

April 16th: $10(3) - 20 = $10

The answer depends on how you interpret the question:

He will make $10 on April 16th. But he will have $90 on April 16th ($10 from each day).