Question

Laredo rides his bike at a rate of 5 yards per second. about how many miles per hour can larenzo ride his bike?

Answer 1

1 yard=3 feet
5 yards to feet
5 yards times 3=15 feet

1 mile=5280 feet
15/5280 miles per second
1 hour=60 minutes
1 minute=60 seconds
1 hour=60 times 60 seconds=3600 seconds
1 hour=3600 seconds
divide both sides by 3600
1/3600hour=1 second

(15/5280)miles per (1/3600) hour

$\frac{ \frac{15}{5280} }{ \frac{1}{3600} }$

invert and multiply

$\frac{15}{5280}$ times $\frac{3600}{1}$=$\frac{ 54000}{5280}$=$\frac{ 225}{22}$ =10.2273 miles per hour