Math, asked by riddhi32333, 5 months ago

a car travilling at a speed of 140 km p/s cover 420 km. how much time will it take to cover 280 km.

Answers

Answered by Dhruv11181
0

Use Direct proportional method!

120km/hr. = 420km.

x km/hr. = 280 km.

Therefore,

420x = 33,600

x = 33,600/420

.:. x = 80 Km/Hr.

It would take 80km/hr to cover 280Km.

Answered by kalpanapandey2014
5

Solution: First, we need to find the time required to cover 420 km.

Speed = Distance/Time

140 = 420/T

T = 3 hours

Applying the unitary method,

420 km = 3 hours

1 km = 3/420 hour

280 km = (3/420) x 280 = 2 hours

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