1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# In a classroom, the ratio of the number of students who like maths to the number of students who like science is 2:5. If the number of students who like science is 20, then find the total number of students.

A
4
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
8
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
20
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
28
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

## The correct option is D 28Given, the ratio of the number of students who like maths to the number of students who like science = 2 : 5. The number of students who like science is 20. We know that, 5×4=20 When we multiply 4 with 5, we get 20. Hence, the multiplier is 4. So, the number of students who like maths will be 2×4=8 The number of students who like maths = 8. The total number of students = 8 + 20 = 28. Items in the Ratio Numbers in the Ratio Actual Value Multiplier Students who like Maths 2 8 4 Students who like Science 5 20 4 Total 7 28

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Proportions
MATHEMATICS
Watch in App
Explore more
Join BYJU'S Learning Program