ACT SAT Prep how to use the ratio to determine the correct data sample

The video tutorial explains how to determine the total number of students in a group based on a given ratio of females to males. It explores equivalent ratios by multiplying the original ratio and checks for divisibility to find the correct total number of students. The tutorial emphasizes understanding ratios and divisibility without relying on calculators.

If the ratio of females to males is 3 to 5, what is the total number of students in the group?

• 8

• 10

• 12

• 6

Which of the following ratios is equivalent to 3/5?

• 8/13

• 7/11

• 9/14

• 6/10

What is the total number of students when the ratio 3/5 is multiplied by 3?

• 24

• 21

• 27

• 18

Which of the following numbers is divisible by 8?

• 152

• 144

• 168

• 160

How can you determine if a number is divisible by 8?

• Check if it ends in 8

• Divide by 2 twice

• Subtract 8 repeatedly

• Check if the last three digits form a number divisible by 8