Kate spent 1 more than Lauren, and together they spent 5. Let k be the amount Kate spent, and l be the amount Lauren spent. We're given: k = l + 1 k + l = 5 Substitute (1) into (2): (l + 1) + l = 5 Group like terms 2l + 1 = 5 Typing this equation into our search engine, we get: l = 2 Plug this into Equation (1), we get: k = 2 + 1 k = 3 Kate Spent 3, and Lauren spent 2