I need help with this math questions.

Question

Adam currently has a a 53%. he maintained this mark by receiving a 31/65 on a speed unit test worth 25% and a 26.5/39 on a assignment about motors worth 20%. He just received a electric circuit assignment and got 48.5/100 and it was worth 20%, what is his overall mark. he wants to pass with a 50% , with an exam worth 35%, out of 70 questions how much does he need to pass with a 50%?

Answer 1

Adam currently has a a 53%.
he wants to pass with a 50%9
Well he already has so the question as written is moot.

(25%)(31/65) + (20%)(26.5/39)+ (20%)(48.5/100)
0.119 + 0.136 + 0.097
0.352
According to the scores given his current average is 35%