Question

A growing farming conglomerate increases its water usage at a rate of 5% every year. If it used 48,000 megaliters of water this year, then how much water will it use 18 years from now?

Answer 1

Future requirement of water = 115,517 mega-liters

Explanation:

Given:

Current requirement of water (C) = 48,000 mega-liters

Increasing rate per year (g) = 5% = 0.05

Number of year (n) = 18 years

Find:

Future requirement of water = ?

Computation:

`Future\ requirement\ of\ water = C(1+g)^n\\\\Future\ requirement\ of\ water = 48,000(1+0.05)^(18)\\\\ Future\ requirement\ of\ water = 48,000(1.05)^(18)\\\\ Future\ requirement\ of\ water = 48,000(2.4)\\\\Future\ requirement\ of\ water = 115,517 (Approx)`

Future requirement of water = 115,517 (Approx) mega-liters