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September 1, 2014

Posted by **tish** on Thursday, April 21, 2011 at 6:07pm.

60:x = 100:450 ( this is how I was trying to work this out but again, I don't the answer in my book ).

Help greatly appreciated.

Thanks

- ratios -
**Ms. Sue**, Thursday, April 21, 2011 at 6:22pmYour ratio is wrong. Put the pounds on top and the dollars on the bottom. Or you could reverse that.

60/100 = x/450

Cross multiply and solve for x.

100x = 27,000

x = 270 pounds

- ratios -
**tish**, Thursday, April 21, 2011 at 6:28pmThe book I am learning from gives an answer of 750 pounds. I am working out of Mathematics Made Simple fifth edition. It doesn't show the work. It shows me one way of doing certain problems and then changes. frusterating? Thank you for your help.

- ratios -
**Ms. Sue**, Thursday, April 21, 2011 at 6:36pmEither you've copied the problem wrong, or your book's answer is wrong.

The problem states that you for 60 pounds, you pay $100. Therefore you'll get a smaller number of pounds than dollars.

Look at it this way.

Pay $100; get 60 pounds

Pay $200; get 120 pounds

Pay $300; get 180 pounds

Pay $400; get 220 pounds

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