Question

11. Khilona earned scores of 97, 73 and 88 respectively in her first three examinations. If she scored 80 in thefourth examination, then her average score will be
(a) increased by 1 (b) increased by 1.5 (c) decreased by 1 (d) decreased by 1.5​

Answer 1

The correct answer is option d the average score will decrease by 1.5

Step-by-step explanation:

Average Score in first three examination =( 97+73+88)/3

                                                                     =86

Now score in fourth examination is  80

so the new average is =(97+73+88+80)/4

                                       = 84.5

so the average score decreased by 1.5

Answer 2

Answer:

D is answer decrease by 1.5

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