Average weight of 32 student's of a class is 30.5 kg. If the weight of the teacher is also included, then average weight is increased by 500g.what is the weight of the teacher??
Answers
Answer:
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Step-by-step explanation:
Average weight of 32 students of a class is 30.5 kg
We know Sum of weight = average weight × no. of persons
Sum of weight = 30.5 kg × 32 = 976 Kg
If weight of a teacher is also included then average weight is increased by 500 g
500g =.0.5 Kg.
Average weight after teacher age is added = 30.5 + 0.5 = 31 Kg.
No of persons now = 32 students + 1 teacher = 33 persons
Sum of age after teacher is included = 31 × 33 = 1023 Kg.
Teacher's weight = Sum of weight of students and teachers - sum of weight of teacher
Teacher's weight = 1023 kg - 976 kg = 47 kg.
Answer the weight of the teacher is 47 kilogram.
Answer:
Average weight = 30.5 kg
Sum of weight = 30.5 * 32 = 976kg
500g = 0.05kg
Average weight of all when teacher's is added = 30.5 + 0.05 = 31kg
Persons at all = 32+1 = 33
Sum of weight of teacher after adding = 33*31 = 1023kg
Teacher = 1023-976 = 47kg
Step-by-step explanation:
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