See attached picture! Can you explain how this problem can be solved?

v

Step-by-step explanation:

i believe you'd do

3x+6+3x=84

isolate the variable by dividing each side by factors that don't contain the variable

to which i got 13

to check :

3(13)+6+3(13)=84

39+6+39=84

84=84

im not too sure though so im really sorry if its wrong

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.