SOLUTION: Rachel and Sarah started out to visit Grandma. They drove for 50kms and stopped to rest before driving for 30 more kilometers. They decided to go back 10kms to a restaurant they ha

Question 1087330: Rachel and Sarah started out to visit Grandma. They drove for 50kms and stopped to rest before driving for 30 more kilometers. They decided to go back 10kms to a restaurant they had seen. After leaving the restaurant, they drove 90 more kilometers to Grandma�s house.
1. How many kilometers did the girls drive on the way to Grandma�s house?
2. The time at the stops totaled to 1 hour and 15 minutes. If they were driving at 60km/h and left at 10:30am, what time would they arrive to the Grandma�s house?
Answer by ikleyn(52798) (Show Source): You can put this solution on YOUR website!
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Can you explain, how "30 more kilometers" in the second sentence do correlate with "90 more kilometers" in the fourth sentence ?

Thank you.

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