Brandon wants to ride his bicycle 21 miles this week. He has already ridden 6 miles. If he rides for 5 more days, write and solve an equation which can be used to determine x

Question

(cont.) the average number of miles he would have to ride each day to meet his goal

Answer 1

x = (21 - 6) / 5

Answer 2

Let us turn this problem into an equation so that we are able to solve it more easily.

Since his goal is 21 miles but has already ridden 6 miles, we need to find out how many more miles he has left, which is 15 (because 21 - 6 = 15)

Now that we know the goal miles is 15 and he has 5 more days, we can turn it into 15 = 5x where x is the number of miles he wants to run each day

Now that we have this formula we can solve for x

x = 3

∴ The average number of miles he would have to run each day would be 3