1
The ratio of the number of students studying in school A, B and C is 5:8: 4 respectively. If the
number of students studying In each of the school is increased by 20%, 25% and 30% respectively,
what will be the new respective ratio of the students in school A, B and C?
Answers
Answered by
1
Answer:
Correct option is
A
18:23:21
The ratio of the number of students studying in school A, B, C.
=6:8:7
Suppose number of student's in school
A=6x
B=8x
C=7x
It will be Increased by
A=6x+6x×20 %
=6x+
100
6x×20
=6x+
5
6x
=
5
30x+6x
=
5
36x
B=8x+
100
8x×15
=8x+
5
6x
=
5
46x
C=7x+
100
7x×20
=
5
35x+7x
=
5
42x
New Ratio =
5
36x
:
5
46x
:
5
42x
=36:46:42
=18:23:21
Answered by
2
Answer:
C) 15 : 25 : 13
Description for Correct answer:
Required ratio
5×120100:8×125100:4×13010
= 5×120: 8×125: 4×130
= 15 : 25 : 13
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