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Standard VI
Maths
Question
In the given multiplication a and b are natural numbers Then (a + b) is
5
6
8
9
A
5
B
6
C
8
D
9
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Solution
Verified by Toppr
(
30
+
a
)
×
2
=
70
60
+
2
a
=
70
2
a
=
10
a
=
5
(
30
+
a
)
×
b
=
140
(
30
+
5
)
×
b
=
140
35
×
b
=
140
b
=
4
So, a+b=5+4=9
Answer (D) 9
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