Question

How do I these plz help

Answer 1

1. Answer: 60 minutes

Step-by-step explanation:

Faucet A: 140 milliliters/min = 0.140 liters/min

Faucet B: 100 milliliters/min = 0.100 liters/min

Let x represent the amount of time

Faucet A + Faucet B = Full fish tank

  0.140x  +    0.100x  =  14.4

                     0.240x = 14.4

                               x = 60

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2. Answer: 40 minutes

Step-by-step explanation:

Quantity currently in tank: 4.8 liters

Water In: 150 milliliters/min = 0.150 liters/min

Water Out: 270 milliliters/min = 0.270 liters/min

Let x represent the amount of time

Qty in tank +    In   -  Out   =  Empty fish tank

     4.8        + 0.15x - 0.27x = 0

                               - 0.27x = -4.8

                                         x = 40