Manufacturer 4686

The phone has a variety of ringtones. 1/3 are loaded from the manufacturer. 2/5 ringtones are melodies. Composed by the user in special programs and the remaining 12 ringtones are digital recordings. How many ringtones are there in total on the phone?

Correct answer:

x =  45

Step-by-step explanation:


x/3 + 2/5 · x + 12 = x

4x = 180


x = 180/4 = 45

x = 45

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