View the step-by-step solution to:

# A lake has a volume of 10^8 m^3. A river flows into the lake at the rate of 310^5 m^3/day.

A lake has a volume of 10^8 m^3. A river flows into the lake at the rate of 3×10^5 m^3/day.

. The same amount of pure water evaporates from the lake each day, so the volume of the lake does not change. The river contains 7 % pollution. The lake is initially unpolluted.

(a) What is the percentage pollution in the lake after t days?  __________%

(b) When does the pollution in the lake reach 1%? after ______ days

a) percentage of pollution in lake after t days = ﻿ ​ 1 0 ​ 8 ​ ​ ​... View the full answer

### Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

### -

Educational Resources
• ### -

Study Documents

Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

Browse Documents