Races and Games Practice Test 1 with solutions

Question : 34 of 40

Marks: +1, -0

In a 100 m race, if Sudesh gives Suresh a start of 20 m, then Sudesh wins the race by 5 seconds. In case Sudesh gives Suresh a start of 40 m, the race ends in a dead heat. How long ... the race take to complete 220 m?

33 seconds
30 seconds
31 seconds
35 seconds
None of these

Validate

Solution:

Let the speeds of Sudesh and Suresh be x and y m/second respectively

{x+5}/{100}

{80}/y

... (i)

x/{100}

{60]/y

... (ii)
By equating (i) and (ii), we get
y = 400 and x =

{20}/3

Hence the time taken by Sudesh =

{220×3}/{20}

= 33 Seconds.

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