Question #49 at this link https://books.google.com/books?

 Question #49 at this link

https://books.google.com/books?id=Nm3uBQP7cTIC&pg=PA340&lpg=PA340&dq=atkinsons+reliable+tools+makes+two+products+that+use+similar+raw+materials&source=bl&ots=7u3XJQ3o3c&sig=ybC6ARumDsPZncRdEI5ZGy308O4&hl=en&sa=X&ved=0ahUKEwimmqqIw6rMAhUDuoMKHc7pB1wQ6AEIQDAF#v=onepage&q=atkinsons%20reliable%20tools%20makes%20two%20products%20that%20use%20similar%20raw%20materials&f=false