Sunbathed 2861

There were more than 40 and less than 80 children by the pond. A fifth of the children took a bath, and a seventh sunbathed. How many children were at the pond?

Correct answer:

x =  70

Step-by-step explanation:

7 ...  prime number 5 ...  prime number LCM(7,5)=57=35  a=LCM(7,5)=35 x=2a=2 35=70

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