carla is going to ride her bicycle to her cousin's house 45 kilometers away. If she leaves at 3:00 p.m and averages 18 kilometers per hour, at what time will carla arrive at her cousin's house?
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3+(45/18)
5.5
=5:30pm
5.5
=5:30pm
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Hi Beth,
So we have Carla. She's riding her bike to the cousins house. The cousin's house is 45 km away. She rides 18 km per hour.
We're also told that she leaves at 3:00 p.m. and the call of the question asks for her estimated time of arrival.
The formula that we're going to need is D = RT, that is, Distance = Rate * Time traveled. The tricky part that we have to watch for that the units used are all the same, though in this case there is no conflicting units (e.g. miles and kilometers, hours and minutes). Since we know D, the distance that she will have traveled, and we know her rate, R, the rate she's bicycling, we only have left to find T:
45 km = 18 km/hr * T; so T = 2.5 hours.
Now, if Carla leaves at 3:00 p.m., in 2.5 hours, it will be 5:30 p.m. Thus, she will arrive at her cousin's house at 5:30 p.m.
Last step: Check to make sure our answer makes sense and that we answered the question in a complete sentence.
To help reinforce your understanding of these concepts, I've searched and found a webpage and a video tutorial that address problems similar to this one, and I thought they might be helpful to you. I've listed them below.
As always, if you need more help, please clarify where you are in the process and what's giving you trouble. I'd be more than happy to continue to assist.
If we've been helpful in answering your question, consider stopping by our Facebook page at www.facebook.com/protutorcompany.
So we have Carla. She's riding her bike to the cousins house. The cousin's house is 45 km away. She rides 18 km per hour.
We're also told that she leaves at 3:00 p.m. and the call of the question asks for her estimated time of arrival.
The formula that we're going to need is D = RT, that is, Distance = Rate * Time traveled. The tricky part that we have to watch for that the units used are all the same, though in this case there is no conflicting units (e.g. miles and kilometers, hours and minutes). Since we know D, the distance that she will have traveled, and we know her rate, R, the rate she's bicycling, we only have left to find T:
45 km = 18 km/hr * T; so T = 2.5 hours.
Now, if Carla leaves at 3:00 p.m., in 2.5 hours, it will be 5:30 p.m. Thus, she will arrive at her cousin's house at 5:30 p.m.
Last step: Check to make sure our answer makes sense and that we answered the question in a complete sentence.
To help reinforce your understanding of these concepts, I've searched and found a webpage and a video tutorial that address problems similar to this one, and I thought they might be helpful to you. I've listed them below.
As always, if you need more help, please clarify where you are in the process and what's giving you trouble. I'd be more than happy to continue to assist.
If we've been helpful in answering your question, consider stopping by our Facebook page at www.facebook.com/protutorcompany.
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okay, divide 45 by 18 first so you know how many hour carla is going to be riding. you will get 2.5.
so if carla is riding for 2.5 hours after 3:00 then she will be riding until 5:30, at which point she will reach her destination
so if carla is riding for 2.5 hours after 3:00 then she will be riding until 5:30, at which point she will reach her destination
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She has to ride 45 km. at 18 hm. per hour, then it would take her 2.5 hours (45 divided by 18)
If she leaves at 3 p.m., she will arrive at 5:30 p.m.
If she leaves at 3 p.m., she will arrive at 5:30 p.m.