ellenwilamowski ellenwilamowski
  • 01-12-2017
  • Mathematics
contestada

There is a string of green and white lights strong around a mirror. For every six green lights there are four white. If there are 30 green lights, how many white lights are there?

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MathGenius04
MathGenius04 MathGenius04
  • 01-12-2017
6:4 = 30:x

6•5 = 30

4•5 = 20

There are 20 white lights.
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