3x+16=40 what is the root of x? A) 4 B) 8 C) 12 D) 14 Solution 3x+16=40 3x = 40 – 16 3x = 24 x =8 Related MCQs: Which one of the following is a positive square root of 2209? What is the square root of 0.16? The cube root of 0.000216 is: A mug filled with half of the liquid weighs 700 gm. When it is empty, it weighs 200 gm. How much will it weigh when 3/4 of it is full of liquid?