Answer:
First, we need to find the total number of pants that have a longhorn, a spartan, or a dolphin design:
1/4 x 400 = 100 pants have a longhorn design
1/5 x 400 = 80 pants have a spartan design
1/10 x 400 = 40 pants have a dolphin design
Total pants with longhorn, spartan, or dolphin design = 100 + 80 + 40 = 220
The remaining pants must have a tiger design:
Total pants - Pants with longhorn, spartan, or dolphin design = 400 - 220 = 180
Therefore, there are 180 pants with a tiger design. The answer is option B.
Explanation: