What approximate value should come in place of question mark (?) in the following question?
33.5% of 1924.2 + ? % of 5324.4 = 6827.5862
Solution
Correct Answer: Option D
In this type of question, we are expected to calculate Approximate value (not exact value), so we can replace the given numbers by their nearest perfect places which makes the calculation easy.
We can write the given values as:
1924.2 ≈ 1924
5324.4 ≈ 5324
6827.5862 ≈ 6828
Now, the given expression:
33.5% of 1924.2 + ? % of 5324.4 = 6827.5862
\(\Rightarrow \frac{{33.5}}{{100}} \times 1924 + \;\frac{?}{{100}} \times 5324 \approx 6828\)
\(\Rightarrow \frac{{33.5}}{{100}} \times 1924 + \;\frac{?}{{100}} \times 5324 \approx 6828\)
⇒ 644.54 + ? × 53.24 ≈ 6828
⇒?≈6828−650.5753.24⇒?≈6828−650.5753.24
⇒ ? ≈ 116
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