Question 205996
D=RT OR T=D/R
T=640/(180-W)
T=800/(180+W)
640/(180-W)=800/(180+W)
640(180+W)=800(180-W)
115,200+640W=144,000-800W
640W+800W=144,000-115,200
1,440W=28,800
W=28,800/1,440
W=20 MPH IS THE WIND SPEED.
PROOF:
640/(180-20)=800/(180+20)
640/160=800/200
4=4