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lina buys a roll of licorice unrolls it and gives a fifth of its length to her mother and two fifths to her brother he now

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Lina buys a roll of licorice, unrolls it and gives a fifth of its length to her mother and two fifths to her brother. He now has 40 cm of liquorice left. How big was the licorice roll when Lina bought it?

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Answer to a math question Lina buys a roll of licorice, unrolls it and gives a fifth of its length to her mother and two fifths to her brother. He now has 40 cm of liquorice left. How big was the licorice roll when Lina bought it?

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LAISSER LA LONGUEUR DU ROULEAU=x; à la mère =x/5 ; frère=(2/5)x; longueur totale = x ; x/5+2x/5+40=x; 3x/5+40=x; x-3x/5=40 ; 2x/5=40;; x=100 ;

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