A tent manufacturer produces two models. Outback and Bushwalker. From earlier sales records it is known that 20 per cent more of the Outback model is sold than the Bushwalker. A profit of $200 is made on each Outback sold, but $350 is mde on each BushWalker. If during the next year a profit of $177000 is planned,how mnay of each model must be sold.