Answer:
2/5 of the students.
Explanation:
Given information,
→ 1/5 students = January
→ 1/10 students = February
→ 1/10 students = March
Now we have to,
→ Find the number of students, who were born in these 3 months.
Method used to solve,
→ Addition
Let's solve the problem,
→ (1/5) + (1/10) + (1/10)
→ ((1 × 2)/(5 × 2)) + (1/10) + (1/10)
→ (2/10) + (1/10) + (1/10)
→ (2 + 1 + 1)/10
→ 4/10
→ 2/5 (of the class)
Hence, the answer is 2/5.