help with algebra.....

[randonmess604]

ok...i know that this might not be the best place to put this....but i need help with solving linear equations involving ratios

A school play ran for two nights, with audiences totalling 1390 adults and students. They paid $4285 for admission. One adult ticket cost $4.00 and one student ticket cost $2.50. The ratio of adults to students was 3 : 5 on the first night and 2 : 3 on the second night. How many students attended each night?

thanks for the help if can give any