A rabbit on a controlled diet is fed daily 300 grams of a mixture of two foods, food X and food Y. Food X contains 10 percent protein and food Y contains 15 percent protein. If the rabbit`s diet provides exactly 38 grams of protein daily, how many grams of food X are in the mixture?  Choose the correct choice from the following:
A) 100	B) 140	C) 150	D) 160	E) 200
Let there be X and Y gm of food.   0.10 X + 0.15 Y = 38   or 10 X + 15 Y = 3800 -----(1)   X + Y = 300 ---------(2)   1) + 2) Eliminating Y, we get   X = 140 gm   ANSWER:140
<result>B</result>
A rabbit on a controlled diet is fed daily 300 grams of a mixture of two foods, food X and food Y. Food X contains 10 percent protein and food Y contains 15 percent protein. If the rabbit`s diet provides exactly 38 grams of protein daily, how many grams of food X are in the mixture?