At 12:00 P. M., the water pressure on a submarine is 435 pounds per square inch. From 12:00 P. M. to 12:30 P. M., the water pressure increases 58 pounds per square inch. From 12:30 P. M. to 1:00 P. M., the water pressure decreases 116 pounds per square inch. What is the water pressure at 1:00 P. M.?

For a read-a-thon, jay and odhràn each started reading a book at the same time and continued reading for several hours. jay's book had 278 pages, and he read 55 pages per hour. odhràn's book had 238 pages, and he read 45 pages per hour. after how many hours did they have the same number of pages left, and how many pages were left?

Liam's parents are driving three times as fast as liam is biking, but they left later than he did. if his parents caught up with him two hours after he left, how much later than liam did they leave?

Icould really use some with this question.