Question

jacob's science teacher told him that his average score for the 7 tests this semester was 82. if jacob makes 100 on the next test, how high will his average be?

Answer 1

Answer:

Jacob's score will be high by 2.25.

Step-by-step explanation:

Average:

The ratio of total marks to the number of test.

$\textrm{Average score}=\frac{\textrm{Total number of score}}{\textrm{Number of test}}$

Jacob's average score was 82 for 7 tests.

Total score of Jacob was = (82×7)

                                          =574

Jacob makes 100 the next test.

After this test, his total score=574+100

                                               =674.

Now, he gave total (7+1)=8 test.

His average score will be

$=\frac{674}{8}$

=84.25

His average score will high = (84.25-82)

                                              = 2.25.