Answer: 11.25 hours
Step-by-step explanation:
From the question, we are informed that every 3 days Ronnie spends 1.5 hours on homework and 2.25 hours on chores.
At this rate number of hours that he will spend on homework and chores in 9 days will be:
= 9/3 [1.5 hours on homework + 2.25 hours on chores]
= 3 [1.5 hours on homework + 2.25 hours on chores]
= 4.5 hours on homework and 6.75 hours on chores]
Total hours = 4.5 + 6.75 = 11.25 hours
