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A and B are travelling towards each other from the points P and Q respectively. After crossing each other A and B take `6 1/8` hours and 8 hours, respectively, to reach their destinations Q and P, respectively. If the speed of B is 16.8 km/h then the speed ( in km/h) of A is:
A और B क्रमशः बिंदु P और Qसे एक-दूसरे की तरफ आ हहे हैं | एक-दूसरे को पार करने के बाद, A और B को अपने-अपने गंततव्यों अर्थात Q और P तक पहुँचने में क्रमशः `6 1/8` घंटे और 8 घंटे लगते हैं | यदि B की चाल 16.8 किमी/घंटा है, तो A की चाल ( किमी/घंटा में ) ज्ञात करें |

A

`20.8`

B

`19.8`

C

`19.2`

D

`20.4`

Text Solution

Verified by Experts

The correct Answer is:
C
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A and B started travelling towards each other at the same time, from places X to Y and Y to X, respectively. After crossing each other, A and B took 2.45 hours and 4.05 hours to reach Y and X, respectively. If the speed of B was 8.4 km/h, then what was the speed (in km/h) of A?

A and B started their journeys from X to Y and Y to X, respectively. After crossing each other, A and B completed the remaining parts of their journey in 6 1/8 h and 8h respectively. If the speed of B is 28 km/h, then the speed (in km/h), then the speed (in km/h) of A is : A और B ने क्रमशः X से Y और Y से X तक की अपनी यात्राएं शुरू की | एक-दूसरे को पार करने के बाद, A और B ने अपनी यात्रा का शेष भाग क्रमशः 6 1/8 घंटे एवं 8 घंटे में पूरा किया | यदि B की चाल 28 किमी/घंटा है, तो A की चाल ( किमी/घंटा में ) ज्ञात करें |

A and B start moving from places X and Y and Y to X, respectively, at the same time on the same day. After crossing each other, A and B take 5 4/9 hours and 9 hours, respectively, to reach their respective destination. If the speed of A is 33km/hr, then the speed (in km/hr) of B is: A और B एक ही दिन को एक ही समय में क्रमश X से Y और Y से X तक चलना शुरू करते हैं। एक दूसरे को पार करने के बाद, A और B अपने संबंधित गंतव्य तक पहुंचने के लिए क्रमश: 5 4/9 घंटे और 9 घंटे लेते 9 हैं। यदि A की चाल 33 किमी/घंटा है, तो B की चाल किमी/घंटा है,

A starts from a place P to go to a place Q. At the same time B starts from Q to P. If after meeting each other A and B took 4 and 9 hours more respectively to reach their destinations, the ratio of their speeds is

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