Question

Krishna travels from point A to B at a speed of 36 km/hr and from point B to C at a speed of 54 km/hr. If he covers this whole distance of 234 km between A and C in 5 hours, then find the distance between A and B

• A. 72 km
• B. 108 km
• C. 144 km
• D. 180 km

Answer 1

The correct option is A 72 km

Let the distance between points A and B be ‘X’ km

So, the distance between points B and C is (234 – X) km

According to the question,

$5=\frac{X}{36}+\frac{(234-X)}{54}$

$\Rightarrow 5=\frac{3X+2\times 234-2X}{108}$

$\Rightarrow X=72km$

Hence, option A is the correct answer