How many heartbeats are in 45 seconds​

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?

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.