Increase £160 by 45%.

If £160 = 100%, the number we are trying to find (let's call this X) equals 145%. (Place numbers in 2x2 grid) 100%    £160 145%     X Multiply the two diagonal numbers together, then divide by the number opposite X. X = (145 x 160) / 100 X = 23200 / 100 X = 232 Answer is £232