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Kai and Dinny folded paper stars over two days. On Friday, Kai folded 21 more

paper starts than Dinny. On Saturday, Dinny folded another 39 paper stars. At the

end of the two days, Kai folded \( {3 \over 7}{}{}\) of the total number of paper stars. How many

paper stars did Kai fold?

 

 

(1) 126

(2) 72

(3) 54

(4) 18

 Oct 14, 2021
 #1
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Kai folded x + 21 starts

Dinny folded x + 39 starts

 

(x + 21)/(x + 39) = (3/7)/(4/7)

x = 33

 

Kai folded 54 starts

 Oct 14, 2021

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