Question

A car started from a place at a speed of 40 km/h. After 1 hour Another car started from the same place at a speed of 50 km/h. After how much time will the second car meet the first car? ​

Answer 1

$\looparrowright$ Question :

$\mapsto$ 1st car started from a place with 40km/h of speed.

$\mapsto$ After 1 hour, another car started from same place from the speed of 50km/h

$\looparrowright$ To Find :

• Time when the 2nd car will meet the 1st car.

$\mapsto$ the speed of 2nd car is more than the speed of first car .

$\looparrowright$ Given :

• Speed of 1st car = 40km/h

• Speed of 2nd car = 50km/h

$\looparrowright$ Solution :

• We know,

$\large \dashrightarrow \boxed{ \boxed{ \rm \:time = \frac{distance}{speed} }}$

☆ Here,

• Time is to find

• Speed is of 2nd car

• Distance is 40km

☆ On calculating :

$\implies \rm \: time = \dfrac{40}{50}$

• 0 in numerator will cancel with 0 in denominator

$\implies \rm \: time = \dfrac{4}{5} \: hr$

$\large \therefore \boxed{\rm \: time = 0.8 \: hrs \:}$

Or,

$\mapsto$ 0.8 × 60 (as to convert 0.8 hrs into minutes )

$\longrightarrow$ 1 hour = 60 minutes

$\large \therefore \boxed{\rm \: time = 0.8 \: hrs \: \: or \: 48 \: min}$