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1). 6 L2). 6.5 L3). 5.5 L4). 5 L |
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Answer» Amount of water INITIALLY = (10/100) × 40 = 4 L Let ‘x’ be the amount of water to be added. ⇒ [(4 + x)/( 40 + x)] × 100 = 20 ⇒ 40 + 10X = 80 + 2x ⇒ 8X = 40 ⇒ x = 40/8 = 5 ∴ 5 L of water is to be added to the mixture. |
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