3 masons

3 masons received 7,700 CZK. The second half received 1/2 more than the first and third twice more than the second mason. How much they each got crowns?

Correct result:

a =  1400
b =  2100
c =  4200

Solution:


a+b+c=7700
b = 1.5 a
c = 2b

a+b+c=7700
b = 1.5•a
c = 2•b

a+b+c = 7700
1.5a-b = 0
2b-c = 0

a = 1400
b = 2100
c = 4200

Our linear equations calculator calculates it.



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