Help me these 3 questions, Please!

1. Leo Manufacturing produces high-quality fashion products for babies and toddlers. Leo employs a selective distribution policy using retailers who apply a 70% markup. Leos wholesalers generally apply a 40% markup to these products. Leos cost to produce a stylish outfit is $20. If Leo applies a 20% markup, what is the retail selling price for the stylish outfit?

2. JJAC/DOC Manufacturing produces high-quality soccer balls at a cost of $19.20 each, and sells them with a 50 percent markup to a wholesaler. The wholesaler than applies a 20 percent markup. A retailer then uses a 60 percent markup. The final retail selling price is:

3. Luke Steven is a wholesaler who pays the manufacturer $900 for a complicated new musical instrument. Luke applies a 20% markup to the instrument that he sells to the retail establishment, New Music Sound Emporium. He believes the retailer will add a 40% markup. If the manufacturer added a 30% markup, what was the manufacturers cost and the final retail selling price?