Paul save 155Kč in 46 2 Kc and 5Kc coins. How much saved 2Kc and 5Kc coins?

Correct result:

a =  25
b =  21


155 = 2a +5b
a+b = 46

155 = 2•a +5•b
a+b = 46

2a+5b = 155
a+b = 46

a = 25
b = 21

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