Answer:
63
Step-by-step explanation:
Let the number of songs = "x".
She has $135 total. Each song costs $1.35. She also spent a constant price of $49.50 on movies. Set the equation:
1.35x + 49.50 = 135
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
First, subtract 49.50 from both sides:
1.35x + 49.50 (-49.50) = 135 (-49.50)
1.35x = 135 - 49.50
1.35x = 85.50
Next, divide 1.35 from both sides:
(1.35x)/1.35 = (85.50)/1.35
x = 85.50/1.35
x = ~63.33
However, note that you can't buy 1/3 of a song, so you must round down.
~63.33 rounded down is 63.
63 songs is your answer.
Please note, that even if you can round up, you should not in this case. A corporation will not sell you an item for less than the posted price.
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