Question

A sea turtle swims at a speed of 27 kilometers per hour. A girl swims 14 decimeters per second. 1 m = 10 dm 1000 m = 1 km How much faster does the sea turtle swim than the girl in meters per minute?

Answer 1

The sea turtle's speed is

`v_(t) = (27 \, (km)/(h) )*(1000 \, (m)/(km) )*( (1)/(60) \, (h)/(min) ) = 450 \, (m)/(min)`

The girl's speed is

`v_(g) = (14 \, (dm)/(s) )*( (1)/(10) \, (m)/(dm) )*(60 \, (s)/(min) ) = 84 \, (m)/(min)`

The ratio of the turtle's speed to that of the girl is

`(v_(t))/(v_(g)) = (450)/(84) =5.357`

Answer: 5.36 faster (nearest hundredth)