Question

Sara and her family went on vacation to a place which is 400 km from their house. this started the journey at 9 a.m. from their house. Annan drives a car and covered 50 km for 1 hour in the first half of their journey. s dene the same speed till she covered 200 km but decrease in the speed to 40 km per one however for the remaining part of their journey. how many hours they might take to cover the end a distance.
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Answer 1

9hrs

will be takento complete the journey

Answer 2

Answer:

she covers : 200km with 50km per hour

50÷200=4 hrs.

remain distance : 200km with 40km per hour

40÷200=5 hrs

total time: 9hrs (4+5)