Question

The average weight of a class of 29 students is 40 kg.
If the weight of the teacher is included, the average rises by 500
What is the weight of the teacher?.
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Answer 1

$\purple{GIVEN }$

• The average weight of a class of 29 students is 40 kg
• If the weight of the teacher is included, the average rises by 500

$\purple{TO \ CALCULATE}$

• Weight of the teacher

$\purple{SOLUTION}$

Total weight of 29 students :

→ 29 × 40

→ 1160 kg

Total weight of student and teacher :

→ 30 × 40.5

→ 1215 kg

Weight of teacher :

→ 1215 - 1160

→ 55 kg

★ The weight of teacher is 55kg

Answer 2

Answer:

$\purple{GIVEN }$

The average weight of a class of 29 students is 40 kg

If the weight of the teacher is included, the average rises by 500

$\purple{TO \ CALCULATE}$

Weight of the teacher

$\purple{SOLUTION}$

Total weight of 29 students :

→ 29 × 40

→ 1160 kg

Total weight of student and teacher :

→ 30 × 40.5

→ 1215 kg

Weight of teacher :

→ 1215 - 1160

→ 55 kg

★ The weight of teacher is 55kg