Question
A special tea is a mixture of three kinds of tea leaves A, B and C in the ratio 7 : 3 : 9.
1 kg of each kind of tea leaves costs $4, $7 and $3 respectively.
What is the cost of 4 kg of this special tea?
3 m

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A special tea is a mixture of three kinds of tea leaves A, B and C in the ratio 7 : 3 : 9.
1 kg of each kind of tea leaves costs $4, $7 and $3 respectively.
What is the cost of 4 kg of this special tea?