Jenny walked to school for 10 minutes at the same speed of 70 meters per minute. Then she realized that she was going to be late to school if she did not speed up, and so she ran remaining distance at the speed of 150 meters per minute. How long did it take her to get to school that day if she lives 1 km away from her school? (There are 1000 meters in one km.)

Question

Mathematics

Chandler Bridges

11 December, 16:13

Jenny walked to school for 10 minutes at the same speed of 70 meters per minute. Then she realized that she was going to be late to school if she did not speed up, and so she ran remaining distance at the speed of 150 meters per minute. How long did it take her to get to school that day if she lives 1 km away from her school? (There are 1000 meters in one km.)

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Evelin Owen · Answer 1

She took 12 minutes. If she walked for 10 mins at 70 mpm (Meters Per Minute), do 70x10. That gets 700 meters walked total. Then if she ran 150 mpm the rest of the way and there were 300 meters left, you take 300 and divide by 150 which is 2. So just add 10 and 2 for 12