Question
In a class of 60, where girls are twice that of boys,
Rohan ranked seventeenth from top. If there are 9 girls ahead of Rohan, how many boys are after him in rank?Solution
Sol: Let the number of boys be x. Then, number of girls = 2x ∴ x + 2x = 60 or x = 20 So, number of boys = 20 and number of girls = 40 Number of students behind Rohan in rank = 60 – 17 = 43 Number of girls ahead of Rohan in rank = 9 Number of girls behind Rohan in rank = 40 – 9 = 31 ∴ Number of boys behind Rohan in rank = 43 – 31 = 12
More Ranking Questions
Simplify: 240 ÷ (5×3) + 18×2 − 7
- What will come in place of the question mark (?) in the following questions?
75% of 240 + 30 = ? 11 × 25 + 12 × 15 + 14 × 20 + 15 = ?
(5/8 + 7/12) x 168 = ? + 93 - 25
What is 12% of 4% of 7% of 2 x 106 ?
60 % of 640 - 57 × 2 - 1520 / 38 = ?
(25)² × 4 ÷ 5 + (3)³ + 48=? + 425
20.05% of 220.05 – 15.15% of 99.99 × 2.02 = ?
(5/8) x 320 + 100 = ?% of 200 + 90
12(3/5) + 4(1/5) × 3(2/3) =?
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