Question
In a class, the present students are in the ratio of
boys to girls as 4:1. If 10 girls are absent and they form 10% of the total class strength, and no boy is absent, then find the number of boys in the class.Solution
Total number of students = 10/0.10 = 100
Number of students who are present = 100 – 10 = 90
Therefore, number of boys in the class = 90 × 4/5 = 72
More No. System Questions
What value should come in the place of (?) in the following questions?
70% of 240 + 75% of ? = 45 * 55 ÷ 5
(33 + 6.25% of 4096) = ? + 2 × 119
What will come in the place of question mark (?) in the given expression?
65% of 900 - 45% of 600 = ? X 3
212.3 × 4414.7 × 4623.4 × 4845.85 = 462?
18/2 of 3/9 of 2/6 of 69690 = ?
Simplify the following questions and choose the correct option.
(84 × 3) ÷ 7 + (64 ÷ 8 × 5) − 19 = ?
7/11 × 1034 + 1(4/7) × 2401 = 1230 +?
(1520 - 1350) ÷ (550 – 500) = ?
What is the value of 7/9-11/12+12/16-1/8?
85% of 620 + ? % of 1082 = 4855
