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Question

In the given multiplication a and b are natural numbers Then (a + b) is
316320_c6431f0a63164b8897ec1c0a04f759ec.png
  1. 5
  2. 6
  3. 8
  4. 9

A
5
B
6
C
8
D
9
Solution
Verified by Toppr

(30+a)×2=70
60+2a=70
2a=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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