Jack Is Learning To Save, Spend, And Give His Money Away. He Has Hetermined To Give Away 10% Of His Job Earnings. If He Gives Away $256, How Much Did He Earn This Summer?
Let's set it up as a ratio
256 is to 10% as x is to 100%
256/10 = x/100 solve for 'x'
x= $2560 amount he earned for the summer