Additional 2941

If the amount for the last text messages in one month with the mobile operator MOBY exceeds 14 euros (it costs 50 cents), each additional text message costs 13 cents.
a) From what time does the price of a text message become 13 cents?
b) How much does it cost to send 125 text messages?

Correct answer:

a =  28
b =  26.61 Eur

Step-by-step explanation:

a=1400/50=28
b=14+0.13 (125a)=26.61 Eur



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