Question

Convert 45 miles per hour into kilometers per minute. Hint 1 mile equals 1.6 km

Answer 1

We need to convert 45 miles per hour to kilometers per minute

So, we should know that :

1 mile = 1.6 km

1 hour = 60 minutes

so,

`\frac{1mile}{1\text{hour}}=\frac{1.6\text{ km}}{60\text{ minutes}}=(2)/(75)\text{ km per minutes}`

so, 45 miles per hour = 45 * 2/75 km per minutes = 1.2 km per minutes

`(1.6)/(60)=(1.6\cdot10)/(60\cdot10)=(16)/(600)=(8\cdot2)/(8\cdot75)=(2)/(75)`