Your Time has Finished

Close

    Close

    Your Score: %

    Average Score of All Users:

    You performed better than of students

    Section Breakdown

    Your Score Average of all Users Percentile
    BMAT 2006 S1

    BMAT 2006 S1

    Your score:

    Average score:

    You performed better than of students

    This section is Section 1 of 3.

    Speed as well as accuracy is important in this section. Work quickly, or you might not finish the paper. There are no penalties for incorrect responses, only marks for correct answers, so you should attempt all 35 questions. Each question is worth one mark.

    You must complete the answers within the time limit. Calculators are NOT permitted.

    Good Luck!

    The ratio of seabirds to people on Gannet Island is 80:1. However, during the last twenty years the seabird population has fallen by 60 %, whilst the human population has increased by 25 %.

    1. What approximately was the ratio of seabirds to people on Gannet Island twenty years ago?
    • 0
    0

    Explanation

    The correct answer is C.

    If the seabird population  has fallen  by 60%, it is now 40% of its original value: 80/0.40=200. If the human population has increased by 25%: 1/1.25=0.8. Therefore the ratio of seabirds to humans 20 years ago was 200:0.8, dividing both sides by 0.8 gives 250:1.

    Post Comment