Ruth takes 12 minutes to cycle to her uncle’s house after she cycles 1/3 of the way, her bike breaks.She walks at 80 meters per minute for the rest of the way. If she cycles 3 times as fast as she walks.how many mins does it take in total to arrive?

1 Answer
Feb 4, 2018

Ruth took #28# minute in total to arrive in uncle's house.

Explanation:

Walking speed of Ruth is #80# meter/minute

Cycling speed of Ruth is #80*3=240# meter/minute

Distance to uncle's house is #240*12= 2880# meter

She covered #2880/3=960# m by cycle in #960/240 =4# minutes

Rest of the journey of # 2880-960=1920# m was covered by

walking in #1920/80=24# minutes. Hence she took #4+24=28#

minute in total to arrive in uncle's house. [Ans]