The amount of time Jill trained for a marathon this month is​ 125% of the amount of time she trained last month. Jill trained for 100 hours this month. How many hours did Jill train last​ month?

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.