Question

9. In a class, 45% of students are girls. If there are 22 boys in the class, then the total
number of students in the class is
(a) 30
(b) 36
(c) 40
(d)44​

Answer 1

✯Given✯

• 45% of students are girls
• 22 students are boys

✮To find✮

• Total number of students in the class

✭Solution✭

• If 45% are girls, then
• Boys are (100 - 45%) = 55%
• Number of boys = 22
• Let the class strength be x

✬According to the question✬

• 55% of x = 22
• 55% = Boys%
• x = Class strength
• 22 = Total no. of boys

✭Simplification✭

• ⁵⁵⁄₁₀₀ × x = 22
• ¹¹⁄₂₀ × x = 22
• x = 22 × ²⁰⁄₁₁
• x = ⁴⁴⁰⁄₁₁
• x = 40

✩The total no. of boys in the class are 40✩

Answer 2

Answer:

c

Step-by-step explanation: