Question

Carrie asked 50 randomly selected middle school students at king's high school about their favorite fast food item. twenty-one selected french fries. if there are 350 middle school students at king's high school, estimate how many will select french fries as their favorite fast food

Answer 1

21 french fries/50 total = x french fries/350 total
Cross Multiply: (21 · 350) = (50 · x)
Divide both sides by 50: (21 · 7) = x
                                           147  = x

Answer: 147 students