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?
A) 100
B) 140
C) 150
D) 160
E) 200
A) 100
B) 140
C) 150
D) 160
E) 200
Use W.A ---
a) Protein % in 300 gm mix = 38 *100/300 = 38/3
b) x/y = (15 – (38/3) ) / (38/3 - 10)
x/y = 7/8
c) Now : x + y = 300. Hence x = 140
Ans : B
No comments:
Post a Comment