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 is 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?

John got 94 marks

Step-by-step explanation:

average = total numbers/ no. of students

77= x/161

78=x+y/172

From 1 :      x= 77*16= 12323

From 2:       x+y= 78*17=  13264

subtracting 3 from 4

y= 1326-1232= 94

the number of possible outcomes that do not show a 1 on the first spinner and show the number 4 on the second spinner is 2.

spinner 1 spinner 2

1                     1

1                     2

1                     3

1                     4

2                   1

2                   2

2                   3

2                   4   = not 1, and 4

3                   1

3                   2

3                   3

3                   4 = not 1, and 4

only 2 outcomes have passed the given condition.

step-by-step explanation:

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