In a kilometer race, A can beat B by 100 m and B can beat C by 80 m. If A and C run in the same race, by how many meters will A win? 1 किलोमीटर की दौड़ में A, B, को 100 मीटर से हरा सकता हैऔर B, C को 80 मीटर से हरा सकता है,यदि A और C उसी दौड़ मे दौड़ेंगे तो A, C को कितने मीटर से हरायेगा?

Raman covers 1 km in 8 min while suman covers the same distance in 10 min. By what distance does Raman beat Suman ?

150 m 65 m 190 m 200 m

Raman covers 1 km in 8 min and suman cover 1 km in 10 min. If they starts together, then distance covered by suman in 8 min = (1000/10) x 8 = 800 m Thus, Raman will beat suman by (1000 - 800 ) m = 200 m

In 1 km race, A beats B by 18 m or 9 s. Find the A' s time over the course.

391 s 591 s 491 s 500 s

Clearly, B covers 18 m in 9 s. B's time over the course = 9/18 x 1000 = 500 s A' s time over the course = (500 - 9) = 491 s

In a 100 m race A runs at a speed of 5/3 m/s. If A give a start of 4 m to B and still beats him by 12 seconds, what is speed of B?

100 मीटर की दौड़ में A, 5/3 m/s की गति से दौड़ता है। यदि A की तुलना में B, 4 m आगे से दोडना शुरु करता है और फिर भी A उसे 12 सेकंड से हरा देता है, तो B की गति क्या है?

5/4 m/s

7/5 m/s

4/3 m/s

6/5 m/s

Let the distance is 100 m and speed of B be x m/s. Then, according to the question 96/x - 100/(5/3) = 12 96/x - 60 = 12 96/x = 72 x = 96/72 x = 4/3

Speed of B is 4/3 m/s.

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