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What should come in place of question mark (?) in the following question? (You do not have to calculate the exact value.) (81.49 × 8.88 + 181.09) ÷ 12.77 = 43.74 + 1.23 × ?

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What should come in place of question mark (?) in the following question? (You do not have to calculate the exact value.)

(81.49 × 8.88 + 181.09) ÷ 12.77 = 43.74 + 1.23 × ?


1). 15
2). 26
3). 65
4). 13


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Answered by on | Votes 0 |

Approximating the values to the nearest integer:

81.49 ≈ 81, 8.88 ≈ 9 and 181.09 ≈ 182

12.77 ≈ 13, 43.74 ≈ 44 and 1.23 ≈ 1

⇒ (81.49 × 8.88 + 181.09) ÷ 12.77 = 43.74 + 1.23 × ?

⇒ (81 × 9 + 181) ÷ 13 = 44 + 1 × ?

⇒ (729 + 181) ÷ 13 = 44 + 1 × ?

⇒ 910 ÷ 13 = 44 + 1 × ?

⇒ 70 = 44 + 1 × ?

⇒ 1 × ? = 26

⇒ ? = 26 /1

⇒ ? ≈ 26

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