Question 271392
D=RT
4,000=(X+X+100)2.5
4,000=(2X+100)2.5
4,000=5X+250
5X=4,000-250
5X=3,750
X=3,750/5
X=750 KMH. SPEED OF THE SLOWER PLANE.
750+100=850 KMH SPEED OF THE FASTER PALNE.
PROOF:
4,000=(750+850)2.5
4,000=1,600*2.5
4,000=4,000