Question

1. ned and oprah are preparing for a party. ned blows up 9 balloons in 15 minutes. oprah blows up 12 balloons in 19 minutes. who is blowing up balloons faster?

9b complete the table for the number of balloons oprah blows up in each time period. assume that oprah is blowing up balloons at a constant rate.
time (minutes) 19 38 57
balloons 12 48

Explanation:

Step1: Find time multiplier

$\frac{38}{19}=2$

Step2: Calculate balloons at 38 mins

$12 \times 2 = 24$

Step3: Find multiplier for 57 mins

$\frac{57}{19}=3$

Step4: Calculate balloons at 57 mins

$12 \times 3 = 36$

Step5: Find time for 48 balloons

$\frac{48}{12} \times 19 = 76$

Answer:

Time (minutes)	19	38	57	76