Seiji and Gavin both worked hard over the summer. Together, they earned a total of $425. Gavin earned $25 more than Seiji. How much did each of them earn?
s + g = 425 g = s + 25 ----------------- We will use the method of substitution: s + s + 25 = 425 2 s = 425 - 25 2 s = 400 s = 400 : 2 s = $425 g = 200 + 25 g = $225 Answer: Seiji earned $200 and Gavin earned $225.
