Question
A school has a total of 600 students. The ratio of boys
to girls is 3:5. If 40% of the boys and 20% of the girls participated in a sports event, how many students did not participate?Solution
Total students = 600. Let boys = 3x and girls = 5x → 3x + 5x = 600 8x = 600 → x = 75. Boys = 3 × 75 = 225, Girls = 5 × 75 = 375. Boys participated = 40% of 225 = 90 Girls participated = 20% of 375 = 75. Total participated = 90 + 75 = 165 Total not participating = 600 - 165 = 435. Answer: c) 435.
More Ratio Questions
5 + 2 × 3 ÷ (3 × 2) ÷ 4
What will come in the place of question mark (?) in the given expression?
{122 + (66/4) + (252/8)} ÷ 8 = (?)1/2
(152 × 24 + 2540)/25 = 44464 ÷ ?
(72 + 30) ÷ 6 + [{75 ÷ 25) + 6} × 2] = ?
12.5% of (100 + ?) = 40
(11/12) × (18/22) × (4/3) + 3 = ?2
- What will come in the place of question mark (?) in the given expression?
435 + 729 - 282 x 2 = ? + 225 + 125 What will come in the place of question mark (?) in the given expression?
{(16 × 25) ÷ 32} × 12 = ? – 200
240 + 25% of 420 – 145 =? + (2.5 + 8.5) 2
