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Elm in NJ
04-04-2008, 09:03 AM
I am having problems explaining this to my son. I have the solution (it is pretty simple) and the answer but there is someting I can't see.

Problem: One day on Jupiter is only 10 earth hours long because of its rapid rotation. One day on Venus lasts 243 earth days because of its slow rotation. How many days does Jupiter have while Venus has only one? Round to the nearest whole day.

Can someone help me solve and explain it in a simple way? He tried to set up a proportion after converting 243 earth days to earth hours but couldn't get it to work


Elmeryl(with J12, C9, R7, L7)

nestof3
04-04-2008, 09:10 AM
Problem: One day on Jupiter is only 10 earth hours long because of its rapid rotation. One day on Venus lasts 243 earth days because of its slow rotation. How many days does Jupiter have while Venus has only one? Round to the nearest whole day.


Well, if you want the answer in Venus Days (since you said the answer needed to be one Venus day), you just look at how many Jupiter days will go into one Venus day.

243 divided by 10 = 24.3 days, but they say round to nearest whole day, so it would be 24.

Jupiter, then, completes 24 days while Venus completes only one.

You could simulate this using an apple and orange or two pieces of paper cut into circles and labeled with Venus and Jupiter. Move Jupiter quickly and Venus slowly to make sure he understands what's going on. You could do this in a straight line if it helps him.

Elm in NJ
04-04-2008, 09:31 AM
the answer is 583 days.

Elmeryl

nestof3
04-04-2008, 09:43 AM
One day on Jupiter is only 10 earth hours long because of its rapid rotation. One day on Venus lasts 243 earth days because of its slow rotation.

Oops -- I read "243 earth hours." -- not days.

nestof3
04-04-2008, 09:45 AM
Okay -- do the same thing I told you to do, except make Venus' 243 days into earth hours by multiplying 243 by 24 (each earth day is 24 earth hours), which gives you 5,832. $5,832 divided by 10 = 583 (rounded).

Myrtle
04-04-2008, 10:13 AM
I am having problems explaining this to my son. I have the solution (it is pretty simple) and the answer but there is someting I can't see.

Problem: One day on Jupiter is only 10 earth hours long because of its rapid rotation. One day on Venus lasts 243 earth days because of its slow rotation. How many days does Jupiter have while Venus has only one? Round to the nearest whole day.

Can someone help me solve and explain it in a simple way? He tried to set up a proportion after converting 243 earth days to earth hours but couldn't get it to work


Elmeryl(with J12, C9, R7, L7)

I interpreted the question as asking, "How many 10/24ths are in 243?"

So I set it up as 243 ÷ 10/24

This is a fun problem, what book did you get it from?

Elm in NJ
04-04-2008, 10:16 AM
Explanation loud and clear.

Elmeryl

Elm in NJ
04-04-2008, 10:17 AM
CLE maths 610


Elmeryl