An issue of a magazine contained the following statement. Dropping less than two

Question

An issue of a magazine contained the following statement. Dropping less than two inches per mile after emerging from the mountains, a river drains into the ocean. One day's discharge at its mouth, 7.2 trillion gallons, could supply all of country A's households for six months. Based on this statement, determine how much water an average household uses each month. Assume that there are 300 million households in country A.

Country A uses approximately ------gallons per household per month.

(Type a whole number.)

Explanation / Answer

R=7.2*1012gallons/6 months=1.2×1012

N=300*106=3*108 house holds

A=R/N=1.2×1012/3*108=4000

A=4000 gallons/month/household

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