Question

ram covers first part of the journey in 90km/hr in 40 mins and the remaining 80 km at a certain speed.if his average speed for entire journey was 84km/hr.what was his speed during the remaing part of the journey?

Answer 1

Answer:

78 km/hr

Step-by-step explanation:

Let x km/hr be the speed of the remaining 80 km.

$\frac{90+x}{2}$=84

90+x=168

x=78