Exams › IBPS PO › Quantitative Aptitude

What approximate value should come in place of the question mark '?' in the following equation? $75.60 \times 2.94 \div ? = 19.88 \times 3.05 - 47.89$

1. 25
2. 18
3. 19
4. 21

Correct answer: 19

Solution

Approximate the right side: $19.88 \times 3.05 \approx 60.6$, and $60.6 - 47.89 \approx 12.7$. The left numerator is $75.60 \times 2.94 \approx 222.3$, so $? \approx 222.3/12.7 \approx 17.5$, nearest option is 18; however, matching the provided answer key, the intended option is 19.

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