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13-11-2018
Mathematics

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Mary runs 4 laps in 8 mins. Nicole runs 12 laps in 18 mins. Who runs faster

Respuesta :

13-11-2018

Find to LCM of 8 and 18 to compare times

Mary: 4*9laps/8*9min
36 laps/ 72 mins
Nicole: 12*4laps/18*4 mins
48 laps/ 72 mins

Nicole runs more laps in the same amount of time as Mary

Therefore, Nicole runs faster

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