Multiple choice

What approximate value will come in place of question mark (?) in the question given below?(123 \times 79 - 25 \times 33 = ? \text{% of } 451)

  1. 1980

  2. 1920

  3. 1850

  4. 1890

  5. 1950
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

First simplify: 123 x 79 = 9717 and 25 x 33 = 825. Then 9717 - 825 = 8892. Let this be x% of 451, so x/100 x 451 = 8892. Solving: x = 8892 x 100 / 451 = 889200/451 ≈ 1971.6. Rounding gives approximately 1980. The key is to compute accurately and round appropriately.

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