alltimeacheiver wrote:
Material A costs $3 per kilogram, and Material B costs $5 per kilogram. If 10 kilograms of Material K consists of x kilograms of Material A and y kilograms of Material B, is x > y ?
(1) y > 4
(2) The cost of the 10 kilograms of Material K is less than $40.
The question can solved using weighted average concept easilywithout pen and paper calculation i.e can be solved within30 seconds.
10kg of mixture uses x kg of Material A and y kg of Material B. If both X and Y are equal, the cost
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