The average weight of 20 students in a class is increased by 0.75 kg when one student of 35 kg replaced by a new student. Weight of the new student (in kg) is :
A. 35
B. 40
C. 45
D. 50
Answer: Option D
Solution(By Examveda Team)
Let the weight of the new student = x kgAccording to the question,
$$\frac{x - 35}{20}$$ = 0.75
⇒ x - 35 = 15
⇒ x = 50
Related Questions on Average
A. 125 km/hr
B. 75 km/hr
C. 135 km/hr
D. 120 km/hr
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