Question

the arithmetic mean of 2x+3, 3x+4, x+7, x-3 and 4x-7 is 14. Find the value of x​

Answer 1

Answer:

x =6

Step-by-step explanation:

solution ⇒

as we know

formula  

Mean = $\frac{sum of all observation}{total number of observation}$

GIVEN⇒ MEAN =14

MEAN =$\frac{2x +3 +3x+4 +x+7+x+3+4x-7}{5}$

14  =$\frac{11X +4}{5}$

Now cross multiply

14 x 5 =11x+ 4

70 =11x+4

11x =70-4

11x =66

x =$\frac{66}{11}$

x=6