Get detailed and accurate responses to your questions on IDNLearn.com. Ask your questions and get detailed, reliable answers from our community of knowledgeable experts.
Step-by-step explanation:
Time in hours is directly proportional to the number of newspapers.
3 hours = 450 newspapers
=> 4 hours = 450 * (4/3) = 600 newspapers.
Hence Joy can deliver 600 newspapers in 4 hours.