SOLUTION: in a triangle ABC,angle B is 4 times angle A and angle C is 15 less than 5 times angle A.

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Question 366711: in a triangle ABC,angle B is 4 times angle A and angle C is 15 less than 5 times angle A.
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
b=4a
c=5a-15
.
a+4a+5a-15=180
10a=195
a=19.5 deg
b=78 deg
c=82.5 deg
.
Ed