What is the solution to this system of linear equations? 2x + 3y = 3 and 7x - 3y = 24

2x + 3y = 3 ... (i)

7x - 3y = 24 ... (ii)

Adding (i) and (ii) we get;

9x + 0 = 27 , 9x = 27 , x = 3

Replacing x=3 in equation (i) we get;

2(3) + 3y = 3

3y = 3 - 6 , 3y = -3 , y = -1

The solution (x,y) of the system of equations above is (3,-1)

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.