What is 5% of £320? I really need to know

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

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)