Jane

Jane buys gifts together for 464 Sk. For the tie paid 4.5 times less than for the shirt, but 56 Sk more than for the socks. How much does she pay 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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