How many tenths are there in 4/5

Let w=23 . what is the value of w + 45 ?

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?