Answered

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Use the following situation for the next few questions:
At Elsa's auto shop, it takes her 12 minutes to do an oil
change and 15 minutes to do a tire change. Let x be the
number of oil changes she does. Let y be the number of tire
changes she does. We are wondering what combinations of
the two tasks she can complete in 60 minutes or less.

1-If Elsa were to only do oil changes, no tire changes, how
many could she do in 60 minutes or less?

Sagot :

LillianPullenidn

Answer:

5 oil changes.

Step-by-step explanation:

60 = 12x + 15y

60 = 12x + 15(0)

60 = 12x + 0

60

---- = x

12

5 = x

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