Question

The water level in a lake was 12 inches below normal at the beginning of march. The water level decreased 2 1/4 inches in march and increased by 1 5/8 inches april. What was the water level compared to normal at the end of april? Explain how you solved his question

Answer 1

This can be solve by simple addition and subtraction. Since the initial water in the lake is 12 in below the normal starting by march, and it decreased further by 2 ¼ in by the end of march and increased by 1 5/8 in by the end of april. So the net water level is

L = 12 – 2 ¼ + 1 5/8 = 12 5/8 in below the normal