Math
posted by Simran kaur on .
A man traveled a distance of 22km in one hour,partly in a car at a speed of 30km/hr and partly on a motorcycle at 18km/hr.find the distance travelled by him in the car.
Ans is 10km plz gve me fst sltn

if the distance traveled by car is c, the 22c is on bike.
add up the times, knowing that time = distance/speed:
c/30 + (22c)/18 = 1
clear fractions to get
3c + 5(22c) = 90
3c + 110  5c = 90
2c = 20
c = 10 
Thanx dear

This is right answer but this step is wrong .