Question

Martha and Rahul ran a 100m race. Martha complete
17 1/5 seconds and Rahul in 15 3/4 seconds. Who won? How much
longer did Martha take?
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Answer 1

Time taken by Martha = 17⅕ = 86/5 s

Time taken by Rahul = 15¾ = 63/4 s

Take LCM of 5 and 4, and rewrite the above terms

LCM = 20

Martha = 86/5 = 344/20 s

Rahul = 63/4 = 315/20 s

Time taken by Rahul is lesser than time taken by Martha, therefore Martha wins the race.

Answer 2

Answer:

Martha 17 1/5 converting mixed fraction in to fraction we get 86/5

Rahul 15 3/4 converting mixed fraction in to fraction we get 63/4

86/5

63/4

LCM of these is =20

344-315/20=29/20

29/20 converting mixed fraction we get 1 9/20

so, Rahul won race by 1 9/20 second