Mathematics
Grade6
Easy

Question

A team of runners is needed to run a 1 fourth-mile relay race. If each runner must run 1 over 16 mile. Find the number of runners they need to run the race.

  1. 4
  2. 5
  3. 1 over 64
  4. 2

hintHint:

When two fractions are divided, we have to multiply the first fraction with the reciprocal of the second fraction. The first step when multiplying fractions is to multiply the two numerators. The second step is to multiply the two denominators. Finally, simplify the new fractions.

The correct answer is: 1 over 64


    Here, we have to find the number of runners needed to complete a ¼ mile relay race if each runner must run 1⁄16 mile.
    Let the number of runners needed be x.
    Then, x × 1⁄16 = ¼
    => x = ¼ ÷ 1⁄16
    => x = ¼ × 16
    => x = 4.
    So, the number runners needed is 4 and the correct option is A.

    The fractions can also be simplified before multiplying by factoring out common factors in the numerator and denominator.

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