Answer:
option c is correct
180 cars can they wash in 15 hours
Step-by-step explanation:
Unit rate defined as the rate are expressed as a quantity 1 such as 4 miles per hour or 5 meter per second.
As per the statement:
Some students washed 24 cars in 2 hours
Then by definition of unit rate.
\(\text{unit rate per hour}=\frac{24}{2} = 12\)
We have to find how many cars can they wash in 15 hours
⇒\(\text{Number of cars washed in 15 hours} = \text{Unit rate per hour} \cdot 15\)
Substitute the given values we have;
\(\text{Number of cars washed in 15 hours} = 12 \cdot 15\)
Simplify:
\(\text{Number of cars washed in 15 hours} = 180\)
Therefore, 180 cars can they wash in 15 hours
