Pipes Company in Ramallah offers a premium plan for its customers beginning 1/1/2020. The offer was for 100 NIS purchased the customer will receive one r i coupon. Customers may exchange every 50 coupons and 30 Nis for a camera. The company pays 60 NIS for each camera and 5 NIS for freight. According to company experiences it estimates that 70% of the coupons given to customers will be take the benefit, 60% of them in the following year and 40% next following year. The results of the premium plan for the years 2020,2021 and 2022 are as follows (assume all purchases and sales are for cash in the end of every year): Required: Journalize the above, economic events 2020,2021,2022