First, write put the information into an equation
2*(x+9) = 3*(x-7)
distribute the 2 and 3
2x + 18 = 3x - 21
Combine like terms (Xs and munbers) (in this case, it's easier to add 15 to both sides and subtract 2x from both sides so both sides end up being positive)
33 = x
x=33
14000+7x=35x (x being the number of books) solve for x and you have your answer. 14000=35x-7x=28x therefore x=14000/28=500 so he needs to sell 500 books before he breaks even.
9514 1404 393
Answer:
2
Step-by-step explanation:
Alex has 10 money units. Annie has 5 money units. The ratio of amounts is ...
Alex : Annie = 10 : 5 = 2 : 1
Alex has 2 times as much money as Annie.
Shawna will climb 45 steps
The first step is to write out the parameters given in the question
Shawna climbed 5 flights of stairs
There were 9 steps in each flight
The number of steps can be calculated by multiplying the number of flight of stairs by the number of steps
= 9 × 5
= 45
Hence there are 45 steps for Shawna to climb
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