How many kgs of salt, costing Rs. 28 per kg must be mixed with 39.6 kgs of salt, costing Rs. 16 per kg, so that selling the mixture at Rs. 29.90, there is a gain of 15%?

How many kgs of salt, costing Rs. 28 per kg must be mixed with 39.6 kg

1.	How many kgs of salt, costing Rs. 28 per kg must be mixed with 39.6 kgs of salt, costing Rs. 16 per kg, so that selling the mixture at Rs. 29.90, there is a gain of 15%?
A.	138
B.	198
C.	200
D.	130
Answer» C. 200

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How many kgs of salt, costing Rs. 28 per kg must be mixed with 39.6 kgs of salt, costing Rs. 16 per kg, so that selling the mixture at Rs. 29.90, there is a gain of 15%?

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