Melisande collected 14 bottles on Saturday and 9 bottles on Sunday for recycling. On Monday, she took all the bottles to the recycling center, where they paid her a certain amount, b, for each bottle. However, she had to pay the recycling center a one-time service fee of $0.25. If she left there with $3.20 for the bottles, what is the value of b?

b = $0.15

Step-by-step explanation:

Total number of bottles = 14 + 9 = 23 bottles

$b per bottle: 23b for 23 bottles

Service fee = $0.25

She got paid a certain amount (lets assume x) for the bottles and out of that she had to give $0.25 for the fee. So the total amount she was paid or x = 3.2 + 0.25

23b = 3.2 + 0.25

23b = 3.45

b = 3.45/23

b = $0.15

Melisande got paid $0.15 per bottle.

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