Answer:
40
Step-by-step explanation:
He can do 8 problems in 5 minutes. 25 minutes is 5 times more than 5. 8 times 5 is 40
40 problems
8 divided by 5 equals 1.6 meaning in one minute there are 1.6 problems answered, and so 1.6*25= 40. Meaning that there are after 25 minutes 40 problems will be solved.
