Assuming she runs at the same pace, this will be a simple problem to solve. First we have to find that rate. She ran 5 miles in 38 minutes. This means she ran about 0.131 miles per minute. Then we just have to multiple that rate by 57 minutes to find out that at the same pace she would have run about 7.5 miles.
Actually your answer is wrong. Ava has already use 1 teaspoon of spice plus 1/3 teaspoon plus another 1/2 teaspoon of spice. 1/3 + 1/2 = 5/6 so the answer is 1 5/6 teaspoons of spice.
