A study in a large country analysed levels of three different antibiotics (A, B and C) in stream water leading towards and away from a large urban household waste dumpsite.
Prior to passing the dumpsite, the stream passes through a large urban township with limited sanitation.
The levels of antibiotics are found in Table 1.
Table 1
Antibiotic |
Level in stream water after dumpsite / arbitrary units |
Level in stream upstream of the dumpsite / arbitrary units |
A
|
12 |
10 |
B |
34 |
8 |
C |
2 |
3 |
Calculate the percentage increase of antibiotic B detected as the stream flows from the township and past the dumpsite.