Answer:
3
3.5
9
7.5
Explanation:
1/2*6=3
1/2*7=3.5
3/4*12=9
2/5*30=7.5
1) 3
2) 3.5
3) 9
4) 12
.5*6=3
.5*7=3.5
.75*12=9
.4*30=12
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