Multiple choice

\text{Find the approximate value of the equation:} \newline 14.99\% \text{ of } 399.987 + 24.99\% \text{ of } 1240.001 \times 0.2 = 0.2 \times ?

  1. 240

  2. 610

  3. 560

  4. 500

  5. 420
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B Correct answer
Explanation

Approximate: 14.99% ≈ 15%, 24.99% ≈ 25%, 399.987 ≈ 400, 1240.001 ≈ 1240. So: 15% of 400 + 25% of 1240 × 0.2 = 0.2 × ?. This gives 60 + 310 × 0.2 = 0.2 × ?, so 60 + 62 = 0.2 × ?, which gives 122 = 0.2 × ?, therefore ? = 122 ÷ 0.2 = 610.

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