Questions on Word Problems: Money, Business and Interest answered by real tutors!

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Question 151547: An author earns $1.15 for every book sold. How many books must be sold if the author wants to earn at least $46,000.
x.1.15=46,000= 4000 How do I put this in an equation Thanks for your help
: An author earns $1.15 for every book sold. How many books must be sold if the author wants to earn at least $46,000.
x.1.15=46,000= 4000 How do I put this in an equation Thanks for your help

Answer by Earlsdon(3748) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = the number of books to be sold at $1.15 per copy.
Now the problem says "...the author wants to earn at least $46,000" So this means that you need to write an inequality rather than an equation.
In writing inequalities, "a is at least = to b" is expressed as a>=b (a is greater than or equal to b), so you would write:
(1.15)x >= 46000 Now you can solve inequalitites much like you would solve equations.
(1.15)x >= 46000 Divide both sides by 1.15
x>=40000
So the author must sell at least 40,000 copies to earn at least $46,000