Problem Solving

Can someone help with approach for the
A food blog for your restaurant delivery app is sending an email to 10,000 of its subcribers. Below is historical performance from similar campaigns
Promo 1 Promo 2 Promo 3
Promo discount(new user) $5off, 3*$5off, $15off
Conversion rate 2% , 3% , 5%
Avg basket size (1st order) $15, $18 , $23
#orders/year 6 , 12 , 8
Restaurant delivery app service fee 25% across all promos


Promotional code : Dollars off an order
Conversion rate: Percent of uers redeeming discount code
Avg basket sizze (1st order): Avgorder from your delivery service app, assume after the first order the basket size will be $20 for all promos
#orders/year : number of orders from your delivery service per per lient in the given cohort
Question: Analayse performace of all three promos and suggest which is the best one
Question 2: If we want a return on profit on each rider within 6months what is the maximum amount we would give off on the promo code

We'd need this info to be presented much more clearly: it's hard to figure out how some of this info relates to the rest without knowing the terms that are being used in your class (for instance, what's a "rider" here: a promotion, or somebody actually delivering the food on a bike, or something else?)