Provides 7260

How much money does a brother have, and how much does a sister have if she pays: if a brother gives a sister CZK 24, they will have the same. If a sister provides a brother with CZK 27, will the brother have twice as much?

Correct answer:

b =  177
s =  129

Step-by-step explanation:


b-24 = s+24
2(s - 27) = b+27

b-24 = s+24
2·(s - 27) = b+27

b-s = 48
b-2s = -81

Row 2 - Row 1 → Row 2
b-s = 48
-s = -129


s = -129/-1 = 129
b = 48+s = 48+129 = 177

b = 177
s = 129

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