How many kilograms of tea worth Rs.25 per kg must be blended with 30 kg of tea worth Rs.30 per kg, so that by selling the blended variety at Rs.30 per kg, there should be a gain of 10%?
Correct Answer: Description for Correct answer:
Let the quantity of tea worth Rs.25 be x kg.
According to the question,
\( \Large \left(25x+30 \times 30\right) \times \frac{110}{100} = 30 \left(30+x\right) \)
\( \Large \left(275x+9900\right)= \left(9000+300x\right) \)
\( \Large 300x - 275x = 900 = x = \frac{900}{25} \)
Therefore, x = 36 kg.
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