You can produce golf balls for a cost of $.75 per unit. If a potential customer can only afford to buy golf balls at $1.10 per unit, what is the maximum percent markup you can bid at? (Round to the nearest penny)

Shannon mary and john earn a weekly allowance ahannon earns the amount that is 2/3 of what john earns mary earns an amount that is 1 2/3 of what johns earns 20 dollars a week who eaens the greatest allowance and who earns the least