Thomas lives an exciting life consuming only boiled potatoes…

Thomas lives an exciting life consuming only boiled potatoes and rutabagas (rutabagas are a root vegetable very similar to potatoes). Potatoes sell for $2 per pound and rutabagas sell for $4 per pound. Thomas finds that when his income is spent, his marginal utility of the last pound of potatoes he buys is 10 while his marginal utility of the last pound of rutabagas he buys is 20. Thomas could increase his total utility without violating his budget by consuming