Question -
Answer -
Distance between two points A and B = 70 km
Let speed of first car starting from A = x km/hr
and speed of second car starting from B =y km/hr
When these start in the some direction, they meet after 7 hours
Distance travelled by the first car = 7x km
and by second car = 7y km
┬а
When these travel in opposite direction, they meet after 1 hour then distance travelled by first car = x km
and by second car = y km
x + y = 70 тАж.(ii)
Adding (i) and (ii)
2x = 80
=> x = 40
and subtracting (i) from (ii)
2y = 60
=> y = 30
Speed of first car = 40 km/hr
and speed of second car = 30 km/hr