GRE Exam Numerical Ability Time Distance and Speed

Usually Holly leaves home to school at 9:00, however today she left home 20 minutes later. In order to be at school on time she increased her usual speed by 20% and still was at school 15 minutes later than usual. What is her usual time from home to school?

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GRE Other Question
A team contributes total of $399 from its members. If each member contributed at least $10, and no one contributed $19, what is the greatest number of members the club could have? What is the area of a region enclosed by |x/3|+|y/9|=10 ?