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JAMB Mathematics questions: Variation

23 questions with answers and explanations. Tap an option to check yourself.

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  1. Question 1· Variation· JAMB

    F varies inversely as the square of d. If F = 36 when d = 2, find F when d = 3.

    Explanation and discussion

  2. Question 2· Variation· JAMB

    y varies inversely as x. If y = 6 when x = 4, find y when x = 8.

    Explanation and discussion

  3. Question 3· Variation· JAMB

    The cost C of printing n copies is partly constant and partly varies as n. C = ₦500 when n = 10 and C = ₦800 when n = 20. Find C when n = 30.

    Explanation and discussion

  4. Question 4· Variation· JAMB

    w varies inversely as the square of v. If v is doubled, w becomes

    Explanation and discussion

  5. Question 5· Variation· JAMB

    y varies as the cube of x. If x is doubled, y is multiplied by

    Explanation and discussion

  6. Question 6· Variation· JAMB

    p varies inversely as the square root of q, and p = 10 when q = 16. Find p when q = 25.

    Explanation and discussion

  7. Question 7· Variation· JAMB

    y varies directly as x, and y = 15 when x = 5. Find x when y = 24.

    Explanation and discussion

  8. Question 8· Variation· JAMB

    x varies inversely as y. If y is doubled, x is

    Explanation and discussion

  9. Question 9· Variation· JAMB

    y varies directly as x and inversely as z. y = 6 when x = 4 and z = 2. Find y when x = 9 and z = 3.

    Explanation and discussion

  10. Question 10· Variation· JAMB

    z varies directly as x and inversely as y. If z = 6 when x = 3 and y = 2, find z when x = 4 and y = 8.

    Explanation and discussion

  11. Question 11· Variation· JAMB

    P varies jointly as Q and R. If P = 24 when Q = 2 and R = 3, find P when Q = 5 and R = 4.

    Explanation and discussion

  12. Question 12· Variation· JAMB

    The area of a circle varies as the square of its radius. If the radius is tripled, the area is multiplied by

    Explanation and discussion

  13. Question 13· Variation· JAMB

    y varies inversely as x, and y = 3 when x = 4. Find x when y = 6.

    Explanation and discussion

  14. Question 14· Variation· JAMB

    y varies as the square root of x, and y = 6 when x = 9. Find y when x = 25.

    Explanation and discussion

  15. Question 15· Variation· JAMB

    P varies directly as Q. If P = 20 when Q = 4, find P when Q = 7.

    Explanation and discussion

  16. Question 16· Variation· JAMB

    The cost of a metal ball varies as the cube of its radius. A ball of radius 2 cm costs ₦400. Find the cost of one of radius 3 cm.

    Explanation and discussion

  17. Question 17· Variation· JAMB

    y varies directly as x, and y = 2.5 when x = 10. Which equation connects y and x?

    Explanation and discussion

  18. Question 18· Variation· JAMB

    y varies inversely as the square of x. If y = 4 when x = 3, find y when x = 6.

    Explanation and discussion

  19. Question 19· Variation· JAMB

    V varies jointly as r² and h. V = 40 when r = 2 and h = 5. Find V when r = 3 and h = 4.

    Explanation and discussion

  20. Question 20· Variation· JAMB

    C is partly constant and partly varies as n. C = 500 when n = 10 and C = 800 when n = 20. Find the constant part.

    Explanation and discussion

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