Level:
Project ID:
1003047808
Accepted:
1
Clonable:
0
Easy:
0
A heavy smoker decides to reduce his daily consumption by $2$ cigarettes for $30$ days from the beginning of the next year. Then reduces his consumption again by $2$ cigarettes per day every $30$ days. How much will he save in $360$ days, given that one box of cigarettes ($20$ cigarettes) costs $80\ \mathrm{CZK}$?
$18\,720\ \mathrm{CZK}$
$624\ \mathrm{CZK}$
$4\,680\ \mathrm{CZK}$
$12\,480\ \mathrm{CZK}$
$6\,240\ \mathrm{CZK}$