Question

Researchers recorded that a certain bacteria population declined from 330,000 to 500 in 42 hours. At this rate of decay, how many bacteria will there be in 21 hours? Round to the nearest whole number.

Answer 1

499 bacterias

Explanation:

330000-500 = 329500

X/100 = 329500/330000

(329500*100)/330000 = 99.85%

(500*99.85)/100 = 499