Kayla drew a scale drawing of a house. In real life, the living room is 4 meters wide. It is 2 centimeters wide in the drawing. What is the scale factor of the drawing?
Simplify your answer and write it as a fraction

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.