Question
X XXXXX XXXXXX X.XXX g XXX XX made of an alloy which XX XX.6% zinc and X.X% XXXXXX. What XX XXX mass of XXXX element in the XXXXX?
XXXXXX:
Tha alloy XXXXXXXX X.XXXX is XXXX up XX zinc XXX XXXXXX.
XXXX XX XXXX in XXXXX=
XXXX XX copper in alloy=