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OpenStudy (anonymous):
Mario answered 75% of the 40 problems on his history homework correctly. How many problems on his homework did he answer correctly? A 19 B 30 C 28 D 10
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OpenStudy (anonymous):
\(.75\times 40\)
OpenStudy (anonymous):
or if you prefer, \(\frac{3}{4}\times 40\)
OpenStudy (anonymous):
.75 x 40
OpenStudy (anonymous):
30 ?
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