Question 18Gage skated $1$ hr $15$ min each day for $5$ days and $1$ hr $30$ min each day for $3$ days. How long would he have to skate the ninth day in order to average $85$ minutes of skating each day for the entire time?$1$ hr$1$ hr $10$ min$1$ hr $20$ min$1$ hr $40$ min$2$ hr