Usaras la regla de 3 simple
18 --> 20
A - - > 50
Multiplicas en aspa
18× 50 = 20 × A
900 = 20A
Vale 45
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Verified answer
Usaras la regla de 3 simple
18 --> 20
A - - > 50
Multiplicas en aspa
18× 50 = 20 × A
900 = 20A
Vale 45