Solving for the Unknown - Basic Mathematics for Water and Wastewater Operators - page 122

■ Example 8.24
Problem:

4000 35 834
0 785

××
×

. .

= 22 8 .

. x

Solution:

4000 35 834
0 785

××
×

. .

= x

. 22 8

116 760
17 9
6522

.
,

= x

.

. 9 = x

■ Example 8.25
Problem:

x

111 =

0 785 . ×× 90 90

Solution:

111 × 0.785 × 90 × 90 = x

705,793.5 = x

■ Example 8.26
Problem:

x × 3.9 × 8.34 = 3870

Solution:

3870
39

3870
32 5

x = = = 119 1 .

. × 834 . .

■ Example 8.27
Problem:

1 320 000 , ,

35 . =

x

Solution:

1 320 000
35

, ,

x = = 377 142 9 , .

.