Question

a container contains two liquids A and B in the ratio 7 and 5 litre of mixture are drawn off and the container is filled with B the ratio of A and B become 1 ratio 1 how many litres of liquid A was in the container initially

Answer 1

Step-by-step explanation:

Photoperiodism is the physiological reaction of organisms to the length of night or a dark period. It occurs in plants and animals. Photoperiodism can also be defined as the developmental responses of plants to the relative lengths of light and dark periods.

Answer 2

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$Let Liquid \: A = 7x litres \\ </p><p>Liquid \: B = 5x \: litres \\ </p><p>In \: 9 \: litres,$

$a = \frac{7}{12} \times 9 = \frac{21}{4} \\ b = \frac{5}{12} \times 9 = \frac{15}{4} \\ 7x - \frac{21}{4} = 5x + \frac{15}{4} + 9 \\ x = \frac{21}{4} \\ liquid \: a = \frac{21}{4} \times 7 = 36 \frac{3}{4}$

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