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Directions: Read the following and answer the questions that follow.There are 3 classes having 20, 25 and 30 students respectively having a…

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Directions: Read the following and answer the questions that follow.
There are 3 classes having 20, 25 and 30 students respectively having average marks in an examination as 20, 25 and 30 respectively. If the three classes are represented by A, B and C and you have the following information above the three cases, answer the questions that follow:
A’s highest score 22, Lowest score 18
B’s highest score 31, Lowest score 23
C’s highest score 33, Lowest score 26
If five students are transferred from A to B.
If 5 students are transferred from B to A, what will be the minimum possible average of A?
  • A20.69
  • B21
  • C20.75
  • D20.6
Answer not set

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Lowest score of B = 23

Present total marks of A = 20 × 20 = 400

Marks of 5 students of B = 23 × 5 = 115

New total marks of B = 400 + 115 = 515

New average of B = $(\frac{{515}}{{25}} = 20.6)$

Hence, 20.6 is the new minimum average of A.