Question

Out of 1900 km visual travelled some distance byou bus and some by aereplace bus travels with average speed 60km/hrs and the average speed of aeroplaneach is 700 km/hrs it takes 5 hrs to complete the joinery find distance

Answer 1

Solution:--
Solution:-

given,
let, travelled by bus = xkm
total distance = 1900km
travelled by airoplane = (1900-x)
total time = 5hours
bus speed = 60km/h
airoplane speed = 700km/h

time travelled by airoplane =(1900-x)/700

total time = x/60+(1900-x)/700

x/60-x/700 + 1900/700 = 5

(35x-3x)/2100 = 5-19/7

32x = 2100×(35-19)/7

32x = 300×16

x = 4800/32

x = 150

travelled by bus = 150km (ans)