An almirah is sold at rupees 5225 after allowing discount of 5%. find its marked price

*A,B,C are the three angles of triangle ABC. if A-B=25 ^{0 }, and B-C=40^{0}, find angles A, B, C. also what type of triangle is it?*

thank you

#### Question No - 20

In the below figure . Find ?

In this question from lines and angles exercise.in the solution it was said that:-

### -----------------------------X----------------------------X------------------------X------------X-----

Now, alternate angles are equal

[ corresponding angles]

Hence,

[ corresponding angles]

[ alternative angles]

Therefore,

-------------X-------------------------X--------------------------X------------------------------X-----------------------X----------

In the above said solution where did the 60 degree come from?