Question

about 120 out of every 320 people are left-handed. if 3,360 students attended Davis High School, about how many are left handed

Answer 1

Using the rule of 3

120 - 320

x - 3360

120*3,360 = 320x

403,200 = 320x

403,200/320 = x

x = 1,260

About 1,260 students are left handed.