What approximate value should come in place of “?” in the following equation: 32.98% of 4399.89 – (17.03 × 22.94) = (?)2 – (5.032 × 3.97) + 5.01
What approximate value should come in place of “?” in the following equation: 32.98% of 4399.89 – (17.03 × 22.94) = (?)2 – (5.032 × 3.97) + 5.01 Correct Answer 34
Rules of Approximation:
1. If a number has digits to the right of the decimal less than 5, then just drop the digits to the right of the decimal. The number so obtained will be the approximated value.
2. If a number has digits to the right of the decimal more than 5, then just drop the digits to the right of the decimal and raise the remaining number by '1'.The number so obtained will be the approximated value.
Concept Used:
Follow BODMAS rule to solve this question, as per the order given below,
Calculation:
33% of 4400 – (17 × 23) = (?)2 – (52 × 4) + 5
⇒ 33% of 4400 – (17 × 23) = (?)2 – (25 × 4) + 5
⇒ 33% of 4400 – 391 = (?)2 – 100 + 5
⇒ 1452 – 391 = (?)2 – 95
⇒ 1452 + 95 – 391 = (?)2
⇒ 1547 – 391 = (?)2
⇒ (?)2 = 1156
∴ ? = 34
