PLEASE HELP ME SOLVE THIS MATHS with clarity, I want to know it how you arrive at the answers. thank you

1) A salesman has below record for products sold during peak seson of October to December. The products are in three variants A, B & C. How many units of product C only is he expected to sell to earn 900 commission? Also find the unit for A & B

2) 5 Palladin bakery uses 2 bags of flour and 1 tin of magarine to produce 20 pieces of cakes and jovad bakery uses 4 bags of flour and 2 tins of magarine to produce 30 pieces of cakes, how many pieces of cake can be produced from 9 bags of flour and 4 tins of margarine

2b) How many cakes can palladin produce from 5 bags of flour and 2 tins of magarine

2c) How many pieces of cakes can jovad produce from 20bags of flour and 12 tins of magarine

3) If UAC Foods use 10 bags of flour and 5 tins of butter to produce 100 raps of gala and UTC uses 15 bags of flour and 8 tins of butter to produce 120 raps of gala. Find how many raps of gala that can be produced from 30 bags of flour and 15 tins of butter