SOLUTION: I need detail solution (and explanation what formulas should be used): A Nintendo DS costs one hundred and twenty British pounds sterling 12000 pennies . I decide today, 17th

Question 824397: I need detail solution (and explanation what formulas should be used):
A Nintendo DS costs one hundred and twenty British pounds sterling 12000 pennies . I decide today, 17th
April 2013, to put 10 pennies aside. Tomorrow I�ll put 15 pennies, the day after 20 pennies, the day after that 25p and
so on, increasing the amount by 5 pennies every day. At which date will I have enough to buy the
Nintendo?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
10+15+20+25 ...
a_n = 5 (n+1) (for all terms given)
12000 = 5 (n+1) (for all terms given)
n = 2399 days
Wednesday, April 17, 2013+2399 days
Monday, November 11, 2019
which is the 101 st anniversary of the end of WWI
2147 days from now xmas
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