1.

istance between two places A and B is 350 km. Two cars start simultaneously fromand B towards each other and the distance between them after 4 hours is 62 km.Ipeed of one car is 8 km/h less than the speed of other car, find the speed of each car

Answer»

Let the speed of car from A is = Xthen car from B = X-8let distance of car which starts from A after 4 hours to point B is = Yand distance of car which starts from B to point A after 4 hrs = Zthen Y+Z+62= 350Y+z = 288kmDistance covered by B after 4 hrs= Z+62distance covered by A after 4 hrs = 350-Zspeed of car from A , X= (350-Z)/4 __(1speed of car from B , X-8 = (Z+62)/4 ___(2put value of X from 1 in eqn 2(350-Z)/4 - 8 = (Z+62)/4350-Z-32 = Z+62Z = 256/2 = 128 kmand X = (350-128)/4 = 55.5 km/hrSpeed of car from B = 55.5 - 8 =47.5 km/hr



Discussion

No Comment Found