Q.44) The number of students in 3
classes are in
in the ratio 4: 5: 6. If 15
students are increased in each class this
ratio changes to
to 11:13:15.
11:13:15. The total
number of students in the three classes in
the beginning was
a) 165
b) 150
c) 175
d) 180
Answers
Answered by
0
Correct Answer:
D) 60
Let the number of students be 3x, 4x and 5x.
Then (3x + 15) : (4x + 15) : (5x +15) = 6 : 7 : 8
3x+156=4x+157
= 5x+158
= > 7(3x +15) = 6(4x + 15)
X = 5
Total number of students before increase = >12x = 60
Similar questions