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Help Needed with Calculating Travel Time

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Katherine_Ryan
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Help Needed with Calculating Travel Time [#permalink] New post   Updated on: 01 Sep 2023, 22:22
"Last weekend, Helen drove from her house to her parents' house. She drove at an average speed of 60 miles per hour (mph) on the way there. On the return journey, she encountered some heavy traffic and could only manage an average speed of 40 mph. https://dmvnow.wiki/ License Plates for Drivers The total distance between her house and her parents' house is 240 miles. Can anyone help me figure out how many hours it took Helen to complete the entire trip?"

Originally posted by Katherine_Ryan on 25 Aug 2023, 21:22.
Last edited by Katherine_Ryan on 01 Sep 2023, 22:22, edited 5 times in total.
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Re: Help Needed with Calculating Travel Time [#permalink] New post   25 Aug 2023, 22:37
Strategy to attack this type of questions is first check what is constant in this situation Time Distance or Speed then equate the constant
Here Distance is same so you can use formula of avg speed 2ab/a+b 40*60/40+60 = 48 and time taken = D/S 240+240/48=10 Hr

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Re: Help Needed with Calculating Travel Time [#permalink] New post   27 Aug 2023, 11:17
Katherine_Ryan wrote:
"Last weekend, Helen drove from her house to her parents' house. She drove at an average speed of 60 miles per hour (mph) on the way there. On the return journey, she encountered some heavy traffic and could only manage an average speed of 40 mph. The total distance between her house and her parents' house is 240 miles. Can anyone help me figure out how many hours it took Helen to complete the entire trip?"


To do 240 miles at 60 mph will take 4 hours.
To do 240 miles (on the return journey) at 40 mph will take 6 hours.

4 + 6 = 10 hours total

-contact: gmatknight site | gmatclub dm
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Katherine_Ryan
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Re: Help Needed with Calculating Travel Time [#permalink] New post   01 Sep 2023, 22:18
THANKS FOR YOUR REPLAY
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Katherine_Ryan
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Re: Help Needed with Calculating Travel Time [#permalink] New post   01 Sep 2023, 22:19
Suniltiwari
OK SURE
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Katherine_Ryan
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Re: Help Needed with Calculating Travel Time [#permalink] New post   01 Sep 2023, 22:20
Last weekend, Helen drove from her house to her parents' house. She drove at an average speed of 60 miles per hour (mph) on the way there. On the return journey, she encountered some heavy traffic and could only manage an average speed of 40 mph. The total distance between her house and her parents' house is 240 miles. Can anyone help me figure out how many hours it took Helen to complete the entire trip CAN I COMPLETE THIS QUESTION WITH IN 0NE MINUTE?
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Re: Help Needed with Calculating Travel Time [#permalink] New post   01 Sep 2023, 22:21
GmatKnightTutor
will you please mention another method?
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gmatclubot
Re: Help Needed with Calculating Travel Time [#permalink]
01 Sep 2023, 22:21
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