Arlene sleeps for 7hr20min each night. How many hours does she sleep in a week? Write your answer as a mixed number, e.g., 1312.

Response:

Her brother catches up to her at 11 am + 4 hours = 15 p.m

Detailed explanation:

Provided information;

Ariel's speed = 45 mph

She departed at 9 a.m

Her brother's speed = 60 mph

He began at 11 a.m

Inferred from the question: Since Ariel's speed is 45 mph, after two hours she is ahead by 90 miles.

Meanwhile, her brother travels at 60 mph, hence he is traveling (60 - 45) = 15 mph faster

Therefore, with this speed, he will catch up to her in = 4 hours.

So her brother catches up with her at 11 am + 4 hours = 15 p.m

James will retain his original t toy cars along with half of (t+13) cars, resulting in a total of...

... t + (t + 13/2) = (3t + 13)/2.... cars after receiving a gift from Paul.