The diagram compares the ratio of girls in the chorus to boys in the chorus. What is the ratio of girls to boys? If there are 40 students in the chorus , how many are girls and how many are boys.

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?