Sam takes 17/9 minutes to walk across the school ground. John takes 9/4 minutes to do the same. Who takes less time and by what fraction ?
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sam takes less time and john take more time than sam
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Sam is slower by 13/ 36 minutes
Step-by-step explanation:
To find how much time Sam is slower by we have to find the LCM of the fractions because their denominators are not the same.
LCM of 9 and 4 = 36
Now we have to make them equivalent.In other words we have to make their denominators 36.
17/9× 4 = 68/36
9/4×9= 81/36
Time Sam is slower by =81/36 -68/36
= 13/36
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