मराठी

8.4 ÷ ______ = 2.1 - Mathematics

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प्रश्न

8.4 ÷ ______ = 2.1

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उत्तर

8.4 ÷ 4 = 2.1

Explanation:

Let x be the missing number, then

8.4 ÷ x = 2.1

⇒ `8.4 xx 1/x = 2.1`  ...`[∵ "Reciprocal of"  x = 1/x]`

⇒ 8.4 = 2.1x  ...[By cross-multiplication]

⇒ `x = 8.4/2.1`

⇒ `x = 84/21 xx 10/10 = 4`

⇒ x = 4

Hence, 8.4 ÷ 4 = 2.1

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पाठ 2: Fractions and Decimals - Exercise [पृष्ठ ४२]

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पाठ 2 Fractions and Decimals
Exercise | Q 40. | पृष्ठ ४२
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