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#1 2007-04-19 06:36:34

Joseph
Guest

Tough math problem

I'm having a really tough time solving this problem and could use some help!

Shomika was helping her family pick oranges in their grove.  She took some oranges home to share with her three friends.  She gave 3 more than half to Jennifer.  Angela got half of the remainder and 3 more.  She gave Josie half of the remainder plus 3.  When she got home, she had only 10 oranges left.  How many did she have when she left the grove?

#2 2007-04-19 07:09:37

JaneFairfax
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Re: Tough math problem

Its an iterative problem:



where an is the number of oranges Shomika has left after giving to the nth person, and a3 = 10. So you just work backwards and find a0.

(a0 = 122.)

PS:

Last edited by JaneFairfax (2007-04-19 07:35:37)


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.

#3 2007-04-20 00:28:57

George,Y
Super Member

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Re: Tough math problem

Simplier way:
Shomika got 3 less than the same half of Josie.
So the half is 13
Before giving Josie the remainder is 26.
26 is 3 less than the previous half.
The previous remainder is 2(26+3)=58
Thus the original amount is 2(58+3)=122

big_smile


X'(y-Xβ)=0

#4 2007-04-20 00:41:16

JaneFairfax
Legendary Member

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Re: Tough math problem

Thats exactly my method above.



I like to generalize. roll


Q: Who wrote the novels Mrs Dalloway and To the Lighthouse?

A: Click here for answer.

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