Ask Question
24 November, 17:15

1. Y varies inversely with x. If y = 9 when x = - 5, find the value of x when y=-6.

2. Luke and Nora can peel 12 carrots in 5 min, working together. Luke can peel 5

carrots in 11 min, working alone. How many minutes would it take Nora to peel 8

carrots, working alone?

+3
Answers (1)
  1. 24 November, 17:31
    0
    Step-by-step explanation:

    1) Y∝ 1 / X

    Y = k / X

    Y = 9, X = - 5

    Putting the values in the relation above

    9 = k / - 5

    k = - 45

    Y = - 45 / X

    Put Y = - 6

    - 6 = - 45 / X

    X = - 45 / - 6

    = 7.5

    2)

    Luke and Nora can peel 12 carrots in 5 minutes

    in 1 minute Luke and Nora can peel 12 / 5 carrot

    in 1 minute Luke alone can peel 12 / 11 carrot.

    In 1 minute Nora alone will peel (12 / 5 - 12 / 11) carrot

    (12 / 5 - 12 / 11)

    = 2.4 - 1.1

    = 1.3 carrot

    In 1 minute Nora alone will peel 1.3 carrot

    1.3 carrot in 1 minute

    8 carrot in 8 / 1.3 minute

    = 6.15 minutes.

    In 1 minute Nora alone will peel 8 carrot in 6.15 minutes working alone.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “1. Y varies inversely with x. If y = 9 when x = - 5, find the value of x when y=-6. 2. Luke and Nora can peel 12 carrots in 5 min, working ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers