A part of the journey is covered in 22.5 minutes at a speed of 68 km/h and the remaining part in 12 minutes at a speed of 72 km/h. The total distance of the journey is (to the nearest integer):

Correct option is A

Given:
Speed in first part of journey =68km/hr
Time taken in first = 22.5min = $$\frac{22.5}{60}= \frac{3}{8}$$​ hr
Speed in second part of journey =72km/hr
Time taken in first = 12min = $$\frac{12}{60}= \frac{1}{5} hr$$​​
Formula Used:
Distance = Speed × Time
Solution:
Distance in first part = $$68 ×\frac{3}{8} = 25.5$$​km
Distance in second part = $$72 ×\frac{1}{5 }$$​= 14.4km
Total distance = 25.5+14.4 = 39.9km ≈ 40km