Answers

  • Brainly User
2014-06-03T19:43:13+08:00
Let x be Edna's height which is 155cm Lilia's height is 2x-10cm By substitution 2x-10cm = Lilia's height 2(155cm)-10cm = Lilia's height 310cm-10cm = Lilia's height 300cm = Lilia's height
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2014-06-04T12:23:32+08:00
Let x be Lilia's Height
y be Edna's height.

equation:
x  = 2y - 10

substituting y = 155

x = 2(155) -10
x= 300

300 cm is Lilia's Height.
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