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Nanda = n
Ariel = a
n - a = 7.500 | x 3 | ⇒ 3n - 3a = 22.500
3n + 2a = 160.000 | x 1 | ⇒ 3n + 2a = 160.000 -
-5a = -137.500
a = 27.500
n - a = 7.500
n - 27.500 = 7.500
n = 35.000 [ cocok ]
Jadi, uang Ariel adalah Rp 27.500