Together m+w

Women 30%. Men are 360 more.
How many are together?

Correct result:

s =  900

Solution:


s=m+z
z = 0.30 s
m = 360+z

s=m+z
z = 0.30•s
m = 360+z

m-s+z = 0
0.3s-z = 0
m-z = 360

m = 630
s = 900
z = 270

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