The answer is 40 ! You combine like terms and get the opposite variables to the left and regular number with out the variable to the right and then solve so 40 !
<span><span><span><span><span>2s</span>+s</span>+12</span>=132 </span>Step 1: Simplify both sides of the equation. <span><span><span><span>2s</span>+s</span>+12</span>=132 </span></span><span><span>Simplify: </span><span>Let's simplify step-by-step. <span><span><span><span>2s</span>+s</span>+12</span>=132 </span><span><span><span><span>(<span><span>2s</span>+s</span>)</span>+<span>(12)</span></span>=132</span>(Combine Like Terms) </span><span><span><span>3s</span>+12</span>=132 </span></span></span><span><span><span><span>3s</span>+12</span>=132 </span>Step 2: Subtract 12 from both sides. <span><span><span><span>3s</span>+12</span>−12</span>=<span>132−12 </span></span><span><span>3s</span>=120 </span>Step 3: Divide both sides by 3. <span><span><span>3s/</span>3</span>=<span>120/3</span></span><span>s=<span>40</span></span></span>
They must sell, 30 cups of lemonade. How I got my answer.
Since it cost $1.20 to start, and a cup of lemonade cost $0.6 to make and there selling them at $0.10 each. So we know they are making a $0.4 profit off of each cup of lemonade. We now have to multiply 4×30=120.
To find the percentage of something you simply divide the amounts. 17 of the 24 books were mystery so to find the percentage of mystery books you do 17 divided by 24
