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Byju's Answer
Standard VII
Mathematics
Direct Proportion
Match the rat...
Question
Match the ratio of the number of red dots to the total number of dots.
A
2 : 5
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B
3 : 5
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C
4 : 5
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Solution
Case(1):
N
u
m
b
e
r
o
f
r
e
d
d
o
t
s
=
2
T
o
t
a
l
n
u
m
b
e
r
o
f
d
o
t
s
(
r
e
d
d
o
t
s
+
w
h
i
t
e
d
o
t
s
)
=
5
S
o
,
r
a
t
i
o
o
f
r
e
d
d
o
t
s
t
o
t
o
t
a
l
n
u
m
b
e
r
o
f
d
o
t
s
=
2
:
5
Case(2):
N
u
m
b
e
r
o
f
r
e
d
d
o
t
s
=
3
T
o
t
a
l
n
u
m
b
e
r
o
f
d
o
t
s
(
r
e
d
d
o
t
s
+
w
h
i
t
e
d
o
t
s
)
=
5
S
o
,
r
a
t
i
o
o
f
r
e
d
d
o
t
s
t
o
t
o
t
a
l
n
u
m
b
e
r
o
f
d
o
t
s
=
3
:
5
Case(3):
N
u
m
b
e
r
o
f
r
e
d
d
o
t
s
=
4
T
o
t
a
l
n
u
m
b
e
r
o
f
d
o
t
s
(
r
e
d
d
o
t
s
+
w
h
i
t
e
d
o
t
s
)
=
5
S
o
,
r
a
t
i
o
o
f
r
e
d
d
o
t
s
t
o
t
o
t
a
l
n
u
m
b
e
r
o
f
d
o
t
s
=
4
:
5
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