The average height of a class of 18 students is 105 cm. After the arri – McqOptions

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1.	The average height of a class of 18 students is 105 cm. After the arrival of 7 new students the average decreases by 5cm. Find sum of the heights of all the students in the class.
A.	1890
B.	2500
C.	2625
D.	2890
Answer» C. 2625

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