135/15 = 486/x
Cross multiply and solve for x.
Natalie picked 135 blueberries in 15 minutes if she continues picking at that rate how many total minutes will it take her to pick 486 blueberries
3 answers
486 blueberries (15 min/135 blueberries)
= (486/135)*15 min = 54 min
= (486/135)*15 min = 54 min
In other words you can do it the math way with proportions or the science way with units.