one of angles of a triangle is equal to sum of other two angles. if ratio of the other two angles is 1:2 , find the angles of triangle​

Asap 25 pts brainliest to right best/answer

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )