Question

Reuben and Swati both go on a 10 mile jog. After 1 hour, Swati is 75% through the race and Reuben is only 60% of the way through. If they both continue running at the same speed, how far will Reuben have to run when Swati finishes her 10 miles?

Answer 1

Answer:

2 miles

Step-by-step explanation:

In 60 mins: Swati has run 7.5 miles and Reuben has run 6 miles

So in 1 min: Swati runs $\frac{1}{8}$ miles and Reuben runs $\frac{1}{10}$ miles.

So Swati will finish the run in $(\frac{10}{\frac{1}{8}})$= 80 minutes.

In that time Reuben will have run $(80*\frac{1}{10})$ = 8 miles.

So Reuben will have 2 miles left to run.