A mechanic at an auto repair shop completed different repairs on two cars. •The parts for one repair cost $400 and it took the mechanic 3 hours. •The parts for the other repair cost $250 and it took the mechanic 5 hours. •The total bill for each repair was the same amount per hour of labor. The equation below can be used to find c, the cost per hour of labor to repair the cars. 400+3c=250+c What was the cost, in dollars, per hour of labor to repair cars?

Step-by-step explanation:

250 + 5c = 400 + 3c

2c + 250 = 400

2c = 150

c = $75 cost per hour

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

d no solution

step-by-step explanation: