Question
A classroom has a ratio of male to female students as
2:3. If 4 male and 6 female students join, the ratio of female to male students becomes 5:3. Find the original number of female students.Solution
ATQ, Let the initial number of male students be 2x and female students 3x. After adding, male students = 2x+4, female students = 3x+6. New ratio (female to male):Â (3x+6/2x+4) = 5/3 cross - multiplying :- Therefore, this negative value means the scenario is impossible with positive student counts.
3/7 Of 504 ÷ 12 + 17 = √?
68% of 450 – 1008 ÷ 14 + 516 ÷ 43 =?
1000÷ 250 = ( 3√? × √1444) ÷ ( 3√512 × √361)
3/7 of 686 + 133(1/3)% of 33 – 69 =?
What will come in the place of question mark (?) in the given expression?
1020 ÷ 51 × 5 + 540 of 25% - 10 = ?2Â
180 ÷ 3 of 2 = 102 – ?
If a nine-digit number 389x6378y is divisible by 72, then the value of √(6x + 7y) will be∶
What will come in the place of question mark (?) in the given expression?
(144 × 16 ÷ 12) × 6 = ?Â
(?)2 = {(26% of 35% of 3000) ÷ 3} × 91
- What will come in place of (?) in the given expression.
625 + 196 – √256 = ?
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