Calculating Weighted Average of Grades

In a classroom, the teacher decided to give two projects to each student. The students needed to complete a science project and a math project. The science project counted for $$\frac{3}{5}$$ of the overall grade and the math project counted for $$\frac{2}{5}$$. If a student scored an 85% on the science project and a 90% on the math project, what is the student's overall percentage for the grade?