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your phone bill is N42. It increases by 10% after 12 months, and a further 20% increase is applied six months later. What’s the price of your phone bill after 18 months?

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sqdancefan

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Answer:

  N55.44

Step-by-step explanation:

The bill is multiplied by 1+10% = 1.10 after the first increase. The second increase multiplies that by 1+20% = 1.20. After 18 months, the bill is ...

  N42 × 1.10 × 1.20 ≈ N55.44 . . . . price after 18 months

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