Question

George runs an outlet where he sells personalized T-shirts. He spends $35 to rent the printing machine and $25 for phone service each month. If each T-shirt costs $5.80, and he sells them for $10, George will start making a profit after selling shirts in a month.

Answer 1

If you're asking how many shirts he needs to sell in a month to start making a profit, the answer is:
t stands for amount of shirt
add how much he used for phone and print machine
35+25
$60+5.80t-10t=0
refine
60-4.2t=0
multiply both sides by 10
600-42t=0
600=42t
divide both sides by 42
t=100/7 which is approximately 14

Answer 2

George needs to sell 15 t shirts to earn profit.

Explanation:

George spends $35 to rent the printing machine and $25 for phone service each month.

Total spending of George per month =
`25+35=60` dollars

The cost price of each t shirt = $5.80

The selling price of t shirts = $10

Profit earned =
`10-5.80=4.20`

So, in order to start making profit after selling shirts in a month, George needs to sell
`(60)/(4.20) =14.28` or 15 t shirts.

We can check this by multiplying 15 with profit amount.

`15*4.20=63`

We can see the profit here.

Therefore, George needs to sell 15 t shirts to earn profit.