Answer:
25% of the total cars in the garage received oil change.
Step-by-step explanation:
Total cars in the garage = 56
Number of cars which required oil change = 14
Now, Percentage of Oil Change = [tex]\frac{\textrm{Number of Cars required oil change}}{\textrm{Total number of cars}} \times 100[/tex]
=[tex]\frac{14}{56} \times 100 = 25[/tex]
or,Percentage of Oil Change = 25%
Hence, 25% of the total cars in the garage received oil change.