Mr. Kutty has only hens and sheep. If the total number of their heads is 38 and the total number of legs is 100 then what is the ratio between the numbers of hens and sheep? Choose the most appropriate option.
A) 2 : 1
B) 1 : 2
C) 6 : 13
D) 13 : 6
E) none of these

Rationale: let the total number of hens and sheep be x and y respectively . i . e . , x + y = 38 and 2 x + 4 y = 100 ∴ ratio = 13 : 6 answer d
Answer: D