Yesterday, Christine went on a bike ride. Her average speed was 10 miles per hour. Today, she went on another ride, this time averaging 13 miles per hour. In the two days, she biked for a combined total time of 11 hours. Let x be the number of hours she biked yesterday. Write an expression for the combined total number of miles she biked in the two days.

ghettoking6q 2022-08-08 Answered
Yesterday, Christine went on a bike ride. Her average speed was 10 miles per hour. Today, she went on another ride, this time averaging 13 miles per hour. In the two days, she biked for a combined total time of 11 hours. Let x be the number of hours she biked yesterday. Write an expression for the combined total number of miles she biked in the two days.
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Answers (2)

Malcolm Good
Answered 2022-08-09 Author has 14 answers
Ebone6v
Answered 2022-08-10 Author has 2 answers
Yesterday she bicycled for x hours at a speed of 10 miles per hour.
Today she bicycled the remainder of 11 hours (11-x) at a speed of 13 miles per hour.
10 mi/hour * x hours + 13 mi/hour * (11-x) hours = 10*x mi + 143 mi - 13*x mi
Combining like terms, she rode a total of 143 - 3 * x miles
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