Jane

Jane buys gifts together for 464 SKK. She pays 4.5 times less for the tie than for the shirt, but 56 SKK more for the socks. Thus, she pays 464 SKK for each item in the gift.

Correct answer:

a =  80 Sk
b =  360 Sk
c =  24 Sk

Step-by-step explanation:


a+b+c=464
a = b/4.5
a = 56+c

a+b+c = 464
a-0.222222b = 0
a-c = 56

Row 2 - Row 1 → Row 2
a+b+c = 464
-1.222b-c = -464
a-c = 56

Row 3 - Row 1 → Row 3
a+b+c = 464
-1.222b-c = -464
-b-2c = -408

Row 3 - -1/-1.22222222 · Row 2 → Row 3
a+b+c = 464
-1.222b-c = -464
-1.182c = -28.364


c = -28.36363636/-1.18181818 = 24
b = -464+c/-1.22222222 = -464+24/-1.22222222 = 360
a = 464-b-c = 464-360-24 = 80

a = 80
b = 360
c = 24

Our linear equations calculator calculates it.



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