average of 20 results is 18.if 3 is subtracted from each results .then what will be the new average?
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Answer:
Answer is 15
Step-by-step explanation:
Previous Total = 20×18= 360
New case = 360-3×20
= 360-60
= 300
Therefore, New Average = Sum of all number
-------------------------------
Total number
= 300/20
= 15
HOPE IT HELPS YOU ☺️
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