Something

System.out.println("please type in a number");
		i = work.nextInt();
		System.out.println("please type in weight mesurement(lb or kg)");
		input = work.nextLine();
		if (input.equals("lb")) {
		    y = i * x;
			System.out.println(y + "kg");
		} else {
		    y = i / x;
			System.out.println(y + "lb");