Sisters Janka and Danka are saved together at 220 CZK. On a trip to Janka wants to take a fifth of her savings and Danka's quarter. Then they will have 50 CZK on the trip. How much money saved Janka and Danka?

Correct answer:

J =  100
D =  120

Step-by-step explanation:

D+J=220 5J+4D=50  D+J=220 J/5+D/4=50  D+J=220 5D+4J=1000  Pivot:Row1Row2 5D+4J=1000 D+J=220  Row251 Row1Row2 5D+4J=1000 0.2J=20  J=0.220=100 D=510004J=510004 100=120  D=120 J=100

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