The average marks of 3 students A, B and C is 60. When another student in the group
the new average becomes 56 marks. If another student E, who has 3 marks more
Joins roup, the average of the 4 students B, C, D and becomes 55 marks How many
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Answer:
The average marks of 3 students A, B and C is 60. When another student D joins the group, the new average becomes 56 marks. If another student E, who has 3 marks more than D, joins the group, the average of the 4 students B, C, D and E becomes 55 marks.
Answered by
0
Answer:
51
Explanation:
A+B+C=60*3=180
a + B + c + D = 56 x 4 = 224
D= 224 -180 = 44 E= 47
B + C + D + E = 4X5 5 = २२०
B + C =220 - 9 1 = 129
B + c = 129
A = 180 - 129 = 51
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