Paving - joints

We are paving with rectangular pavement 18 cm × 24 cm was placed side by side in height in a row and in the second row in width etc. How many times will the joints meet at a distance 10 m?

Correct result:

n =  13


a=18 cm b=24 cm l=10 m cm=10 100  cm=1000 cm  18=232 24=233 LCM(18,24)=2332=72  x=LCM(a,b)=LCM(18,24)=72 cm  n1=l/x=1000/72=125913.8889 n=n1=13.8889=13

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