How may shells does Joshua have?
2 answers:
Joshua has 12 shells
k+ j=54
k +(k-30)=54
k+k=84
2k=84
k=42
j=k-30
j=42-30
j=12
double check
12+42= 54!!
24, since 54-30 is 24, and 30+24 is 54.
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