Someone answer if it's correct i am going to give you brainliest

.48x =36 x=36/.48 x=75 So the total distance to kirk's grandmother's house was 75 miles

50 minutes doesn't matter at all, so don't pay attention to it. 

You know that 36 miles is 48% of the distance, so you need to find out how many miles equals 100%. 

You can write it as a ratio:
36 is to what as 48 is to 100.

Write it as fractions, and set them equal to each other. 

36/x = 48/100
(cross multiply)
48x = 3600
(isolate the x, divide both sides by 48)

Your answer is 45 miles!