R + R - 6 + 4R = 126 6R - 6 = 126 6R = 126 + 6 6R = 132 R = 132/6 R = 22 (hours Ruby worked) I = R - 6 I = 22 - 6 I = 16 (hours Isaac worked) S = 4R S = 4(22) S = 88 (hours Svetlana worked)
Finally, let's check our three answers to see if their sum is 126 (the given total of hours worked): 22 + 16 + 88 = 38 + 88 = 126
100% = 1.00 is the cost of the jeans itself 6% = 0.06 is the sales tax to be added let "cost of jeans" be represented by x so you will get an expression (1.00 + 0.06) x + 8.95 = Total Cost
