Question 1137620
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If we had 100 people total, then 45% of that would be 45 children. The term "percent" means "per 100" or "for every 100".


So we can have this ratio
45 children: 100 people total


Multiply both parts of that ratio by 6 so that the "100 people" turns into "600 people"
45 children: 100 people total
6*45 children: 6*100 people total
270 children: 600 people total


There are <font color=red size=4>270</font> children that visited the museum on Tuesday


A more conventional approach is to use your calculator
45% of 600 = (45/100)*600 
45% of 600 = 0.45*600 
45% of 600 = <font color=red size=4>270</font>
yielding the same answer 
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