Question 553957
30 tons of rock at 60 dollars per ton equals 1800 dollars.
you have 2500 - 1800 = 700 left.
the amount of trees you can plant are <= 700/84 = 8.33333.
the equation that would take care of this would be:
T <= (2500 - R*60)/84.
that would get you:
T <= (2500 - 30*60)/84 which gets you:
T <= 2500 - 1800)/84 which gets you:
T <= 700/84 which gets you:
T <= 8.33333
since you can't plant part of a tree, then your answer will be any integer between 0 and 8.