Tyger spends 25 minutes studying mathematics, 35 minutes studying science, and 40 minutes studying for social studies. What percentage of his time is spent studying science?

Tyger spends 35 minutes studying science, which is 35 out of 100 minutes. Therefore, the percentage of his time spent studying science is 35%.

25 + 35 + 40 = 100

(35/100) * 100 = 35 %