Is one half percent equal to 50%?

Given that abcd is a parallelogram solve for m

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Find the midpoint m of z1=(8+5i) and z2=(12+3i)