You are on a farm that raises cows and chickens. If there are 20 animals total, and the animals have 56 legs in total (assume a standard number of legs for the animals) , how many cows and many chickens are there?

You are on a farm that raises cows and chickens. If there are 20 animals total, and the animals have 56 legs in total (assume a standard number of legs for the animals) , how many cows and many chickens are there?

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Expert Solution

Step 1

Number of 4 feeted(cows)animals =

( L - 2H ) /2

Where , L = number of legs

H = number of heads

L = 56

H = 20

So,

Cows = ( 56 - 40 )/2 = 16/2 = 8

Chickens = 20-8 = 12

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