MATH - PROPORTIONS
Two numbers are in the ratio of 2 to 3. If the smaller number is 18, the larger number is _____.
27
1. multiplying diagonally across the equal sign in a proportion 2. a statement that says two ratios are equal 3. a comparison of two quantities or numbers as a quotient
1. cross multiplication 2. proportion 3. ratio
If 2d = 5c, then all of the following are true except _____.
2/c = 5/d
In a group of students, the ratio of girls to boys is 3 to 2. If there are 15 girls, how many total students are there?
25
Which of the following is not a proportion?
4/10 = 12/20
On a field trip, there are 12 adults and 14 students. What is the ratio of the number of adults to the total number of people on the field trip?
6 to 13
Solve for the variable in the following proportion. 1/4 is to 1 1/4 as 2 is to b
b = 10
Solve for the variable in the following proportion. 5/25 = m/125
m = 25
Solve for the variable in the following proportion. n : 1/2 as 6 : 1
n = 3
Solve for the variable in the following proportion. 4/7 = x/161
x = 92
Solve for the variable in the following proportion. 3.6/y = 1.2/2
y = 6
If a soccer team won 7 of its 13 games, what was their ratio of wins to losses? Assume that there were no tie games.
7 to 6
All of the following are equivalent except _____.
15/5