Points a and b are 100 km apart from highway if car travels in same directions with constant speed they meet in 5hours If they travel towards each other they meet in one hour . What are the speed of two cars?
Answers
Answer:
speed of car A and B are 60 km/hr and 40 km/hr
Step-by-step explanation:
let the speed of two cars is x km/hr and y km/hr
distance of car A travel in same direction = speed × time
= x × 5 = 5x
distance of car B travel in same
direction = 5y
5x - 5y = 100 (divide by 5)
x - y = 20 ----------(1)
distance of car A travel towards each other = x × 1 = x
distance of car B = y
x + y = 100 ---------(2)
on adding eq. 1 and 2
x - y = 20
x + y = 100
..............................
2x = 120
x = 120/2
x = 60
put x in eq. 2
x + y = 100
60 + y = 100
y = 100 - 40
y = 60