The pencils cost $0.15 each and the markers cost $0.30 each. In total, Sarah spent $7.50 on pencils and markers. How many pencils did Sarah buy?
+14917 The pencils cost \(0.15\ each\ and\ the\ markers\ cost\ \)0.30 each. In total, Sarah spent $7.50 on pencils and markers. How many pencils did Sarah buy?
Hello Guest!
\(0.15\cdot p=7.50\$-0.30\cdot m\)
\(p=f(m)=\frac{7.50-0.30\cdot m}{0.15}\)
Sarah can buy \(\large p=\frac{7.50-0.30\cdot m}{0.15}\) pencils if she has selected m markers.
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