Two planes start from Miami airport and fly in opposite directions. The second plane starts 40 minutes after the first plane but it's speed is 90 mph faster. Find the speed of each plane when 3 hours after the first plane departs the planes are 2800 miles apart

Two planes start from Miami airport and fly in opposite directions. The second plane starts 40 minutes after the first plane but it's speed is 90 mph faster. Find the speed of each plane when 3 hours after the first plane departs the planes are 2800 miles apart lalalallalalala

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.