Question

Pls help find x in both

Answer 1

Explanation:

In similar triangles, corresponding sides are in same ratio

`(28)/(24) = (3x-9)/(x +8)\\\\(7)/(6)=(3x-9)/(x+8)\\`

Cross multiply,

7*(x + 8) = 6*(3x -9 )

7x + 7*8 = 6*3x - 6*9

7x + 56 = 18x - 54

56 = 18x - 7x -54

56 = 11x - 54

11x - 54 = 56

11x = 56 +54

11x = 110

x = 110 /11

x = 10

PR = 3x -9

= 30 - 9

PR = 21