Perimeter of one triangle is 7/10 the perimeter of the a similar triangle. The difference of two corresponding sides is 3in. What are the lengths of the sides?

Question

anonymous · Answer

@amistre64  @RadEn @Hero  @cwrw238 @tcarroll010   please help

anonymous · Answer

If x = the side of one triangle and y = the corresponding side of the other and similar triangle, then:

x = (7/10)y

Also,

x = y - 3

You now have 2 equations in 2 variables that can easily be solved by substitution.  Show your work and I'll help you further if you get stuck.

anonymous · Answer

y-3 = 7/10y
-3/10y = -3
         y =   10     and    x = 7

anonymous · Answer

There you go!  You got it!

anonymous · Answer

The reason you can extend this logic from perimeter to side length is that each ot the corresponding sides are 7/10 of the other.  The perimeter was just a device to talk about the sides and one pair of sides in particular.

anonymous · Answer

@tcarroll010  Thanks for the explanation!

anonymous · Answer

Good luck to you in all of your studies and thx for the recognition! @vmathhelp

anonymous · Answer

You're very welcome!