Practicing Success
The ratio of boys and girls in a group is 7 : 6. If 4 more boys join the group and 3 girls leave the group, then the ratio of boys to girls becomes 4 : 3. What is the total number of boys and girls initially in the group? |
117 78 91 104 |
104 |
The ratio of Boys and girls in a group = 7x : 6x According to the question, ⇒ \(\frac{7x + 4}{6x - 3}\) = \(\frac{4}{3}\), ⇒ 21x + 12 = 24x - 12, ⇒ 3x = 24, ⇒ x = 8, The total number of boys and girls initially in the group are = 7(8) + 6(8) = 56 + 48 = 104. |