Mark:
NICK
$7
(Divide your cost by the number of albums, 26.00 / 104 = $0.25 per album. Multiplying the 28 albums you want by the unit cost, 28 x $0.25 = $7.00).
DP
12
(Divide 9 miles by 1.5 hours for your average speed = 6mph. Divide your average speed by 2 for miles per ½ hour, 6mph / 2 = 3 miles per 30 minutes. Add the 3 miles to the 9 miles you ran, 9+3 =12 miles).
Nick confirms the numbers.
Mark:
ECLIPSES
144/11 (or 13 1/11) months

/
(Congrats Mark)
The amount of time the red moon must travel for can be broken down into two parts:
1. the amount of time needed to complete one orbit
2. the additional amount of time needed to cover the distance achieved by the white moon.
The amount of time it would take the red moon to orbit the planet once would be twelve months. The amount of time it would take the red moon to cover the distance achieved by the white moon would be one twelfth of the time it took the white moon to do this, thus t/12.
As the white moon and the red moon will in fact have travelled for the same amount of time (just at different speeds), the time the red moon travels for (12 mos. + t/12) will be equal to the amount of time (t) for which the white moon has traveled. Thus we get the equation:
12 mos. + t/12 = t
Solving for t, we get: 144/11 (or 13.090909...) months.
The space below is reserved for Nick's answer.
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What would be the first number in this series
You drop 4 coins in a well. One nickel, one quarter, and the other two are dimes. Using a special device, your friend is able to retrieve two coins from the well and tells you that one of the coins is a dime.
What are the chances that the other coin she took out is also a dime
What is the next number set in this idiosyncratic series:
Wsx edc rfv