anonymous
  • anonymous
Salma photocopied the design for a monorail track system. The figure below shows the design and its photocopy: The ratio of DA : BC is 1 : 2. The total length of track on the design is 47 meters. What is the length, in meters, of side EH on the photocopied image?
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Where's the figure?
anonymous
  • anonymous
welshfella
  • welshfella
The design and the photocopy are congruent the length (DA + BC) = 47 - 15 - 17 = 47 - 32 = 15 Now using the Fact that DA:BC = 1:2 you can find the length of DA and BC EH is equal to length of AD.

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welshfella
  • welshfella
can you split up 15 into 2 numbers whose ratio is 1:2?
welshfella
  • welshfella
one number will be 15 * 1/(1+2) and the other = 15* 2 (1+2)

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