NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 7: Algebra - Problems and Solutions
Question 94

Question. 94

On my last birthday, I weighed 40kg. If I put on m kg of weight after a year, what is my present weight?

Answer:

(m + 40) kg

Detailed Answer with Explanation:

  1. Your old weight was (40 ext{kg}).
  2. After one year, you gained (m ext{kg}).
  3. Present weight = old weight + weight gained
    ( ext{Present weight} = 40 + m)
    (Rightarrow (40 + m) ext{kg})

Note: Writing (40 + m) or (m + 40) means the same thing.

Final Answer: ((m + 40) ext{kg})

Quick check with a number

If (m = 5), then present weight = (40 + 5 = 45 ext{kg}).

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