Question
In 2022, the ratio of boys to girls in a school was 8:7.
By 2023, 50 boys and 80 girls had left the school, while 90 new boys and 30 new girls joined. As a result, the ratio of girls to boys in the school changed to 3:4. Determine the total number of boys and girls in the school in 2022.Solution
Let the number of boys and girls in the school in 2022 be '8m' and '7m', respectively. ATQ: (8m - 50 + 90) :(7m - 80 + 30) = 4:3 Or, (8m + 40) ÷ (7m - 50) = (4/3) Or, 3 X (8m + 40) = 4 X (7m - 50) Or, 24m + 120 = 28m - 200 Or, 4m = 320 So, 'm' = 80 Therefore, sum of number of boys and girls in the school in 2022: = 8m + 7m = '15m' = 15 X 80 = 1,200
How many books are kept between Hindi and Computer books?
What is the position of G with respect to the one who read The Pioneer?
Sum of pens with the DR and LABOUR is ___.
Priya is older than her cousin Manvi, Manvi's brother Bhaskar is older than Priya. When Manvi and Bhaskar are visiting Priya, all three like to play a g...
How many floors are there between W and S?
B visits the country on which of the following day?
Choose the correct water image of the given figure (X) from amongst the four alternatives.
The student who belongs to China appeared for which exam?
Which of the following word is coded as “cfz”?
Who is the manager?
Relevant for Exams:
