anonymous one year ago HELP UNDERSTANDING?? **IM BAD AT MEASUREMENTS It took Xander 31 minutes to run a 5-kilometer race last weekend. If you know that 1 kilometer equals 0.621 mile, how many minutes did it take Xander to run 1 mile during the race? Round your answer to the nearest hundredth. 1.99 minutes 3.105 minutes 9.98 minutes 15.52 minutes

1. MichaelAlex292

First, convert 5 km to miles

2. anonymous

3.10686 miles?

3. MichaelAlex292

Yep that's about right, now do you know how to set that to a proportion?

4. anonymous

ahhh 0_o proportion?

5. MichaelAlex292

$\frac{ 3.10686 }{ 31 } = \frac{ 1 }{ x }$ It looks something like this

6. MichaelAlex292

Now solve for x

7. anonymous

3.10686x/31

8. MichaelAlex292

3.10686x = 31 Now divide both sides by 3.10686

9. anonymous

9.97791982902

10. MichaelAlex292

Yep, that's correct :)

11. MichaelAlex292

12. anonymous

so c? thank you!

13. MichaelAlex292

Yep, no problem