Sonali applied for a job of Science teacher in a school. In the test for job, she scored 8 in Physics, 8 in Chemistry, 6 in Biology, and 6.5 in the interview. For calculating the final score, weightage of 2, 3, 3 and 4 were assigned to Physics, Chemistry, Biology and interview, respectively. What is the weighted average score of Sonali?

7

weighted average =  \(\frac{ Sum\:of\:Scores\:×\:weightage}{Total\:weightage\:points}\)

                        = \(\frac{8 × 2 + 8 × 3 + 6 × 3 +6.5 × 4}{12}\)

                        = 7