Mathematics: There are 17 students in a class. on the day the test was given, john was absent. the other 16 students took the test, and their average score was 77. the next day, john took the test, and with his grade included, the new average is 78. what is john s grade on the test

There are 17 students in a class. on the day the test

Ответ:

bankskry

15.03.2022

Let x be the John's grade.
The new average is 78 then we get the equation:
$\frac{16\times77+x}{17}=78\text{ We will solve like this:}\\ 16\times77+x=17\times78=1326\\x=1326-1232=94$

John graded 94.

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Ответ:

infoneetusinghoyg22o

11.06.2022

Mathematics

36 feet

Step-by-step explanation:

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There are 17 students in a class. on the day the test was given, john was absent. the other 16 students took the test, and their average score was 77. the next day, john took the test, and with his grade included, the new average is 78. what is john's grade on the test

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