Free SAT Test Questions

Question 1 of 1
Section: Math - Problem Solving & Data Analysis
Topic: Average
Difficulty level: Medium

(Practice Mode: Single selected Question » Back to Overview)

Average weight of 20 students of a class is 30 kg. When the weight of teacher is included, the average weight of the class including the teacher is increased by 1 kg. What is the weight of the teacher? (Calculator is allowed)

A21 kg
B31 kg
C51 kg
D61 kg

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