40- Stay Clean (Dec 2009)

Hi Sir.
Dishwasher (DW), Washing machine (WM) and tumble dryer (TD).
Current contributions.
DW = $80, WM= $170 and TD = -$10

I understand the the computation part.
Their is (b) question in Kaplan kit asking.

b) explain two pricing strategies that could be used to improve the financial position of the business in the next 12 months assuming that the TD continues to be made in that period.

Their answer is
Complementary pricing, stay clean could link their sales with complementary price. For example they could offer customers a discount on the second product bought, so if they buy (say) a TD for $80 then they can get a WM for (say) $320. Overall then stay clean make a positive contribution of $130 (320+ 80 – 180 – 90).

Product line pricing.
If I write only conclusion, they said
A package price could be offered and as long as Stay Clean make a contribution on the overall deal then they will be better off.

So my question is what is the point of discount when you are already making negative contribution. Before the discount, they were making from the two products $150 (350 + 80 – 180 – 90).
I don’t understand what is the point in here, may be that is because I don’t know how this pricing strategy will hide the lost contribution in one product. So please help me with it.