.05n + .10d = 4.85 n - 34 = d Substitute the second equation into the first equation and solve for n. .05n + .10(n - 34) = 4.85 .05n + .10n - 3.4 = 4.85 combine like terms .15n - 3.4 = 4.85 add 3.4 to both sides .15n = 8.25 divide both sides by .15 n = 55 d = n - 34 d = 55 - 34 d = 21
