Question

Please help!

Question: I took a test that was worth 15 marks, I got 10.5 out of 15 on the test. The test was worth 20% of my final grade. How much % did I get out of the test?​

Answer 1

Answer:14%

Explanation:

final grade score=a

20% of a=15

20/100 x a=15

20a/100=15

Cross multiply

20a=15 x 100

20a=1500

Divide both sides by 20

20a/20=1500/20

a=75

B% of 75=10.5

B/100 x 75=10.5

75B/100=10.5

Cross multiply

75B=10.5 x 100

75B=1050

Divide both sides by 75

75B/75=1050/75

B=14