Answer:
b. 60
Step-by-step explanation:
We have been given a formula 
, where x represents the number of small vehicles and y represents the number of larger vehicles.
To find the number of small vehicles, we will substitute 
in the given equation as:
Therefore, 60 small vehicles were washed in total and option 'b' is the correct choice.
Answer:
Step-by-step explanation:
hello : here is an solution
We can do this by the tree method. What I've done here is to divide each factor by prime numbers until we have only prime numbers left. For example the second level of the tree from the top has 350 and 2. This is because 750 = 2*350. the next level has 175 and 2 because 350 = 2*175.
At the end we are left with the prime factors and find that 700 = 7*5*5*2*2
The answer to this question is 20 mph and 24 mph
