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Makes up 27 per cent of a blue whale’s body weight. Deepak found the average weight of blue whales and used it to calculate the average weight of their blubber. - Mathematics

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Question

Makes up 27 per cent of a blue whale’s body weight. Deepak found the average weight of blue whales and used it to calculate the average weight of their blubber. He wrote the amount as 22 × 32 × 5 × 17 kg. Evaluate this amount.

Sum

Solution

Weight calculated by Deepak = 22 × 32 × 5 × 17 kg

= 2 × 2 × 3 × 3 × 5 × 17

= 4 × 9 × 5 × 17

= 36 × 5 × 17

= 180 × 17

= 3060 kg

Hence, weight calculated by Deepak was 3060 kg.

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Chapter 11: Exponents and Powers - Exercise [Page 352]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 11 Exponents and Powers
Exercise | Q 94. | Page 352
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