Question:
A certain animal in the zoo has consumed 39 pounds of food in six days. If it continues to eat at the same rate, in how many more days will its total consumption be 91 pounds?

Option A):
8
Option B):
9
Option C):
10
Option D):
11

Correct Answer is Option A):
8

Explanation:
Food consumed per day = 39/6.
In the remaining days it will consume 91 - 39 pounds = 52 pounds
Now divide the food by the daily consumption to find the number of days
52 / (39/6) = 52 x (6 / 39) = 8