Answer
(a) 910 runners
(b) 650 runners
Work Step by Step
Multiply
(a) $\frac{1560}{1}\times\frac{7}{12} = 910$
(b) $\frac{1560}{1}\times\frac{5}{12} = 650$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.