Tammy is going for a walk she walks at a speed of 3 miles per hour for 7.5 miles. For how many hours does she walk.

Tammy does walk a time of  3.75 hours

Explanation:

Given-

Speed, (which can be represented as  s) = 2 miles/hour

Distance, (which can be represented as d) = 7.5 miles of distance .

Time, t = ?

We know,

d = s t

7.5 miles of distance  = 2 miles/hour × t

3.75 hour of time  = t

Therefore, Tammy does walk a time of  3.75 hours

its 4 because 2 times 2 is 4, if you double the number two you get four