Question

during a hot summer week the water level in wei's pool decreased by 1.9 centimeters. wei added water to the pool increasing the level by 3.5 centimeters. duringthe next week the water level decreased by 2.4 centimeters.how does the new water level comoare to the original water level.

Answer 1

first week : -1.9 + 3.5 = 1.6
2nd week : -2.4

original water level had an increase of 1.6 inches
new water level has a decrease of -2.4 inches

Answer 2

The water level after 2 weeks is 0.8 centimeter less than original water level.

Explanation:

Let initial water level be a.

During a hot summer week the water level in Wei's pool decreased by 1.9 centimeters.

New water level = a - 1.9

Wei added water to the pool increasing the level by 3.5 centimeters.

New water level = a - 1.9 + 3.5 = a + 1.6

During the next week the water level decreased by 2.4 centimeters.

New water level = a + 1.6 - 2.4 = a - 0.8

The water level after 2 weeks is 0.8 centimeter less than original water level.