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When a baby was born his weight is 3.5 kg. Find the approximate weight of the baby after 4 years in pound, if every year weight is increased by 2.25 kg.
1. 30 pounds
2. 28 pounds
3. 25 pounds
4. 26 pounds

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Correct Answer - Option 2 : 28 pounds

Given:

Weight of baby at the time of birth = 3.5 kg

Formula Used:

1 kg = 1000 gram

1 pound = 453.592 gram 

≈ 450 gram 

Calculation:

As weight is increased by 2.25 kg every year

So, weight of baby after 4 years = 3.5 + 2.25 + 2.25 + 2.25 + 2.25 = 12.5 kg

And, 12.5 kg = 12.5 × 1000 gram = 12500 gram

As, 1 pond = 450 gram

∴ 12500 gram = (1 ÷ 450) × 12500] pounds = 27.7 pounds

≈ 28 pounds

∴ The weight of the baby after 4 years is 28 pounds.

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