Question

14. There are an equal number of male and female in a
class. If 20 more female join the class, the ratio of
male to female becomes 3:4. What was the original
number of students in the class?​

Answer 1

Answer:

students =120

male =60

female =60

Step-by-step explanation:

equal number in class so ratio

=1:1

1x:1x

add 20 more female

1x:1x+20::3:4

1x/3=1x+20)/4

4x=3x+60

x=60

so original strength was 60 males and 60 females

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