In a class of students, the ratio of girls to boys is 2:5.
In a class of students, the ratio of girls to boys is 2:5. If 4 more girls joined the class, the ratio would be 3:5. How many students are in the class?
Answer/Solution
28
Steps/Work
Let x be the number of students in the class.
(2/7)*x=(3/8)(x+4)-4
16x=21x+84-224
5x=140
x=28
The answer is D.
(2/7)*x=(3/8)(x+4)-4
16x=21x+84-224
5x=140
x=28
The answer is D.