Question

an ostritch can run at a rate of 50 miles in 60 minuites. how long would it take an ostrich to run 15 mikes

Answer 1

50 miles ... 60 minutes
15 miles ... x minutes

If you would like to know how long would it take an ostrich to run 15 miles, you can calculate this using the following steps:

50 * x = 15 * 60
50 * x = 900    /50
x = 900 / 50
x = 18 minutes

Result: An ostrich can run 15 miles in 18 minutes.

Answer 2

$\sf\frac{50~miles}{60~minutes} = \frac{15~ miles}{x~minutes}\\\\50(x) = 15(60)\\\\50x = 900\\\\x = 18$

Your answer is 18 minutes