A tiger in a zoo has consumed 120 pounds of food in 10 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumption be 168 pounds?
If the tiger has consumed 120 pounds of food in 10 days that's 120/10 = 12 pounds of food per day. The tiger needs to consume 168 - 120 = 48 more pounds of food to reach 168 pounds total. At 12 pounds of food per day that's 48/12 = 4 more days.