The house sparrows population has decreased by 41% since 1977. the population is now approximately 6.5

The house sparrows population has decreased by 41% since 1977. the population is now approximately 6.5 million pairs of birds. what was the estimated sparrow population in 1977?

Related Posts

This Post Has 3 Comments

  1. Let x be estimated population in 1977

    x - 0.41x  = 6,500,000
     x = (6,500,000 / 0.59

    Answer is approximately 11,017,000  

    11 million

Leave a Reply

Your email address will not be published. Required fields are marked *