Answer:
AB = 1.33
Step-by-step explanation:
AB and QR are in a ratio of 3 to 8 so we can create this proportion:
(3x+5)/24 = 3/8
cross-multiply:
8(3x+5) = 72
divide each side by 8 to get:
3x + 5 = 9
3x = 4
x = 4/3 or 1.33 repeating
