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IBPS PO Prelims 24 Aug 2025 Shift 1 Solved Paper

Question : 91 of 100

Marks: +1, -0

225.12 ÷ 2.9 + 31.8 × 9.9 = ? + 74.24

Solution:

Concept:

Use approximation to convert decimals into simple whole numbers for quick calculation.

Explanation:

Given:

225.12 ÷ 2.9 + 31.8 × 9.9 = ? + 74.24

Approximate the values:

225.12 \approx 225

2.9 \approx 3

31.8 \approx 32

9.9 \approx 10

74.24 \approx 74

The equation becomes:

225 ÷ 3 + 32 × 10 = ? + 74

Now calculate:

75 + 320 = ? + 74

So:

395 = ? + 74

Therefore:

? = 395 - 74 = 321

Hence, the approximate value of '?' is

321

Answer:

? \approx 321

(Option E).

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