Step-by-step explanation:
total problems = 17+28=45
If she ca finish five problems in 20 minutes,
so...
for 45 problems
she take 45/5*20=180 minute = 3hour
Answer:
It would be 3 hours
Step-by-step explanation: you add 17+28 and you get 45, then you divide 45by 5 which gets you 9 and then you add 20 together 9 times
