Question
In a college, the ratio of male to female students is
5:3. If there were 10 additional males and 14 additional females, the ratio would change to 3:2. Find the total number of students in the college.Solution
ATQ,
Let the number of male and female students be '5n' and '3n' respectively. ATQ; (5n + 10) : (3n + 14) = 3 : 2 Or, 2 × (5n + 10) = 3 × (3n + 14) Or, 10n + 20 = 9n + 42 Or, 'n' = 22 Therefore, total number of students = 5n + 3n = 8n = 8 × 22 = 176
More Percentage Questions
(1520 - 1350) ÷ (550 – 500) = ?
- What will come in place of (?) in the given expression.
(14)² – (12)² = ? - Evaluate: 168 ÷ 12 × 5 + 190 – 20% of 450
25% of 250 + 32% of 200 = ? ÷ √ 16
What will come in the place of question mark (?) in the given expression?
24% of 400 × 16% of ? = 384
4567.89 - 567.89 - 678.89 = ?
- Evaluate: 195 ÷ 13 × 8 + 220 – 30% of 500
162 ÷ [51 – {29 – (9 – 6̅ ̅+̅ ̅7̅ )}]=?
What will come in the place of question mark (?) in the given expression?
642 - 362 = ? X √1225
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