three angles are given as X,X,Y. and the avg of two angles is 65, then what is the possible value of Y in the below options? A. 60 B. 65 C. 70 D. 75 E. 80我不明白是怎么算出来的,

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threeanglesaregivenasX,X,Y.andtheavgoftwoanglesis65,thenwhatisthepossiblevalueofYinthebelowoptions?A

three angles are given as X,X,Y. and the avg of two angles is 65, then what is the possible value of Y in the below options? A. 60 B. 65 C. 70 D. 75 E. 80我不明白是怎么算出来的,
three angles are given as X,X,Y. and the avg of two angles is 65, then what is the possible value of Y in the below options?
 A. 60
 B. 65
 C. 70
 D. 75
 E. 80
我不明白是怎么算出来的,

three angles are given as X,X,Y. and the avg of two angles is 65, then what is the possible value of Y in the below options? A. 60 B. 65 C. 70 D. 75 E. 80我不明白是怎么算出来的,
(X+Y)/2 = 65
说明X+Y=130
又因为X+X+Y=180
所以X=50
得到Y=80
Best Wishes~!
PS avg = average 平均数