Math Is Fun Forum

soha

Real Member

Registered: 2006-07-07

Posts: 2,530

divide150...................

Divide 150  into  3 parts such that the second number is five sixths the first and the third number is four -fifths the second.

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popo

Member

Registered: 2007-10-21

Posts: 4

Re: divide150...................

I dont reallt understand your question !

60 -50 -40 ???

Daniel123

Member

Registered: 2007-05-23

Posts: 663

Re: divide150...................

Well if you put the three numbers into a ratio:

Call the 1st number: 1
Call the 2nd number: 5/6 (as it's 5/6 of the first number, 1)
Call the 3rd number: 4/5 x 5/6 = 2/3 (as it's 4/5 of the second number, 5/6)

Then add up all the ratios, which gives 2.5

If you then divide 150 by 2.5 you get 60, which tells you that a proportion of '1' is worth 60. Therefore:

1st number: 1 x 60 = 60
2nd number: 5/6 x 60 = 50
3rd number: 2/3 x 60 = 40

Last edited by Daniel123 (2007-10-23 01:05:36)