1.  In a caravan, in addition to 5o hens, there are 45 goats and 8 camels with some keepers. If the total number of feet be 224 more than the number of heads in the caravan, the number of keepers is
A. 5
B. 8
C. 10
D. 15

Answer: Option D

Explanation:

Let the number of keepers be x. Then,
Total number of feet = 2 × 50 + 4 × 45 + 4 × 8 + 2x = 2x + 312.
Therefore (2x + 312 ) = ( 103 + x) + 224 or x = 15.