Mrs.Chavez is on an 8-kilometer hike. She wants to reach the halfway point of the hike in 3 hours. She plans to hike 1.5 kilometers the first hour and 1.5 kilometers the second hour. What could she do to determine how far she should hike in the third hour?
A.add 1.5 to 8 and compare the sum to 3 divided by 2
B.subtract 1.5 from 8 and compare the difference to 3 multiplied by 1.5
C.Multiply 1.5 by 2 and compare the product to 8 divided by 2
D.divide 8 by 1.5 and compare the quotient to 3 subtracted from 8
C?
Right.
To determine how far Mrs. Chavez should hike in the third hour, you can follow these steps:
1. Calculate the total distance she wants to hike to reach the halfway point of 8 kilometers. Since she wants to reach the halfway point, the total distance would be 8 divided by 2, which equals 4 kilometers.
2. Subtract the distance she has already hiked from the total distance she wants to hike. In the first two hours, she hiked 1.5 kilometers each hour, so the total distance hiked in the first two hours is 1.5 + 1.5 = 3 kilometers.
3. Subtract the distance she has already hiked (3 kilometers) from the total distance she wants to hike (4 kilometers). This would be 4 - 3 = 1 kilometer.
Therefore, Mrs. Chavez should hike 1 kilometer in the third hour.
Looking at the options provided:
A. Adding 1.5 to 8 and comparing the sum to 3 divided by 2 is not a valid method to determine the distance she should hike in the third hour.
B. Subtracting 1.5 from 8 and comparing the difference to 3 multiplied by 1.5 is also not a valid method.
C. Multiplying 1.5 by 2 and comparing the product to 8 divided by 2 is not correct either.
D. Dividing 8 by 1.5 and comparing the quotient to 3 subtracted from 8 is not related to the calculation needed.
Therefore, the most accurate answer is none of the options provided.