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Please help me with this, I only have a few more questions and I'll be posting them on my page for help

Please help me with this I only have a few more questions and Ill be posting them on my page for help class=

Respuesta :

Answer:

B) 450

Step-by-step explanation:

You use the greater amount minus the lesser amount, times 30 minutes.

55-40=15

15 x 30=150

Hope I helped!