A scale is balanced when both sides have equal weight. Identify the heavier and lighter sides of the scale. Then add the weights correctly on both the sides to balance the scale.

A. Add 5 on the left and 2 on the right.
B. Add 2 on the left and 5 on the right.
C. Add 5 on the right side.
D. Add 2 on the left side.

Answer: A

Solution:
Let’s compare the numbers on scale on both sides
To balance the scale we need,
Left Hand Side = Right Hand Side
When we place 5 on the left side and 2 on the right side,

Then,
12 on both sides make the scale equal.