Natasha and Sonja drank 12 l of cool water. Natasha drank twice as much as Sonja. how many litres did Natasha drink?
N = 2S N + S = 12 2S + S = 12 3S = 12 S = 12/3 S = 4 N = 2S N = 2 (4) N = 8 litres
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N = 2S
N + S = 12
2S + S = 12
3S = 12
S = 12/3
S = 4
N = 2S
N = 2 (4)
N = 8 litres