Answer: 158 miles
Step-by-step explanation: To find out how many miles Henry will travel in 3 hours, we need to use the conversion factor between kilometers and miles.
Given:
Rate of travel = 84 kilometers per hour
Time = 3 hours
Step 1: Convert kilometers per hour to miles per hour
Since there are approximately 1.6 kilometers per mile, we can divide the rate of travel in kilometers per hour by 1.6 to convert it to miles per hour.
84 kilometers per hour / 1.6 = 52.5 miles per hour
Step 2: Multiply the rate of travel in miles per hour by the time in hours
Now, we can multiply the rate of travel in miles per hour by the time in hours to find the distance traveled in miles.
52.5 miles per hour * 3 hours = 157.5 miles
Step 3: Round to the nearest mile
Since we need to round to the nearest mile, we round the distance traveled to the nearest whole number.
157.5 miles ≈ 158 miles
Therefore, Henry will travel approximately 158 miles in 3 hours.