85 apples are to be distributed in a class consisting of boys and girls. If each boy gets 5 apples, then each girl will get 7 apples, and if each boy gets 4 apples, then each girl will get 9 apples. How many students are there in the class?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 15.
| Understanding |
|---|
|
Let the number of boys = B Number of girls = G According to the question; 5B + 7G = 85 4B + 9G = 85 From these two equations; B = 2G Now, substitute these values in 5B + 7G = 85 17G = 85 G = 5 B = 2G = 10 Number of students = 10 + 5 = 15 Hence, option 1 is the correct answer. |