The science center has 300 people in attendance on Tuesday. This is 150 percent of the attendance on Monday. Natasha is trying to figure out how many people were in attendance on Monday. Her work is shown below. StartFraction part Over whole EndFraction = StartFraction 150 Over 100 EndFraction StartFraction 150 times 2 Over 100 times 3 EndFraction = StartFraction 300 Over question mark EndFraction Since 150 times 2 = 300, then 100 times 3 or 300 people were in attendance on Monday. What mistake did Natasha make? Natasha should have multiplied 100 by 2. Natasha should have divided 150 by 3. Natasha should have added 150 and 300. Natasha should have multiplied 300 and 150 percent.