Achef used 1/10 of a bag of potatoes to make 1/6 of a gallon of stew. if he wanted to make a full gallon of stew how many bags of potatoes would he need?

Ashley spent half of her lunch money on a turkey sandwich. then she spent two-thirds of the money she had left on a bottle of juice and the rest of the money on a cookie. if the cookie cost $.75, how much lunch money did ashley have to start with?