(7,2 . n) + 9 = 7,5(n + 1)
= 7,2n + 9 = 7,5n + 7,5
= 9 - 7,5 = 7,5n - 7,2n
= 1,5 / 0,3
= 5 kali
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(7,2 . n) + 9 = 7,5(n + 1)
= 7,2n + 9 = 7,5n + 7,5
= 9 - 7,5 = 7,5n - 7,2n
= 1,5 / 0,3
= 5 kali
→ Jawaban: B