Question

a car travels first 39 kilometer distance in 45 minutes, while next 25km distance in 35 minutes. what is it's average speed? ​

Answer 1

Answer:

Step-by-step explanation:

..speed = distance/time..

⇒ s = 39/45 + 25/35

⇒ s =( 7×39)+ (9×25)/315

⇒ s = 273+225/315

⇒ s = 498/315

⇒ s= 166/105