Puntata 1
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Puntata 1
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About this listen
SOLUZIONE DEL QUESITO DI «PALESTRA LOGICA»
La sorella maggiore ha 30 anni perchè:
A+B+C= 75
A= 3/2C
B= 3/2C-5
3/2C + (3/2C-5) + C = 75
8/2C = 80
C=20
A= 3/2X20 = 30
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In the spirit of reconciliation, Audible acknowledges the Traditional Custodians of country throughout Australia and their connections to land, sea and community. We pay our respect to their elders past and present and extend that respect to all Aboriginal and Torres Strait Islander peoples today.