Answer:
MY= 33 (total of MW and WY)
WY= 11 (MY is median line, so WY is 1/2 of MW)
NZ= 30 (total of NW and WZ)
NW= 20 (NZ is median line, so NW is 2 times WZ)
XP= 39 (total of PW and XW)
XW= 26 (XP is median line, so XW is 2 times WP)
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