Question

In the Acres and Cows module, we learned that 45 million tons of plant protein were used to feed livestock each year. If we instead used this protein to feed humans 50 grams of protein each day for a year, we could feed approximately how many humans in that year? Remember that there are 454 grams in a pound, and 2000 pounds in a ton. Group of answer choices About 375 million people About 800 million people About 1.3 billion people About 2.2 billion people More than 3 billion people.

Answer 1

Solution: Grams of protein in 45 million tons: = 45 x 2000 x 454 = 40860000 million grams Amount of protein eaten by a human in a year = 50 x 365 = 18250 grams Hence, Number of humans that can be fed in a year: 40860000 million grams 18250 grams =- = 2238.9 million 2.2 billion