Does anyone know?
Please help me

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

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?

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68