Answer: 
Step-by-step explanation:
Let be "x" the time in minutes a 150-pound person must walk at 4 mph to use at least 190 calories.
The amount of calories that a 150-pound person uses in 1 minute when walking at a speed of 4 mph is:

Therefore, knowing this, we can write the following proportion:

Finally, we must solve for "x" in order to find its value.
Multiplying both sides of the equation by 190, we get this result:

Answer:
The answer is 2:10
Step-by-step explanation:
60 mins in an hour. 1:45+25 is 1:70, turn that into ours and you get 2:10.
Here goes the answer. Please mark brainliest.
1/10 is the answer if you divide 10,000 from 1,000