Please Help!!

Carlos is changing his health care insurance and deciding between two different pans that charge the same premium.
Plan A has a $1,200 deductible with 30% coinsurance. Plan B has a $1,500 deductible with 25% coinsurance. Carlos had a total of $6,350 in medical bills last year. Under which plan would Carlos share have been less?
Support your answer with mathematical calculations. Answer in complete sentence.