Respuesta :

mumsy
she walks  0.5 miles in 15 minutes
she will walk 1 mile in 30 minutes and 2 miles in one hour
2miles/hour
s1m1
1/2 mile per 1/4 hour so in 1 hour
(1/2)•4mile per (1/4)•4
2 miles per 1 hour

The walking rate is 2 mph