Collection 81826

Ema has 3 times more picture cards in her collection than Dana. They have a total of 240 images. They are bought in packs of 10 for CZK 14. How much did Dana's pictures cost?

Correct answer:

x =  84 Kc

Step-by-step explanation:

e=3d e+d=240  3d+d=240 4d=240 d=240/4=60 e=3 d=3 60=180  x=14 (d/10)=14 (60/10)=84 Kc

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