pls answer this quickly
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a. 100. b. 20 c.28 d.495
Step-by-step explanation:
a. 40+10+40+10 =100
b.5+5+5+5 =20
c. 1+3+3+1+3+3+1+3+3+1+3+3+1 =28
d.100+120+90+45+60+80=495
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