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Question

The angles of a triangle, in ascending order are xo, yo, zo and yoxo=zoyo=10. The smallest angle is:

A
40
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B
60
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C
50
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D
70
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Solution

The correct option is C 50
Given, yx=zy=10
We know, x+y+z=180 .........Sum of all angles of triangle is equal to 180o
Therefore, x+(x+10)+(x+10+10)=180
3x=150
x=50o
So, option C is correct.

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