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RRB RPF RPSF SI and CONS Model Papers 10 with solutions
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© examsnet.com
Question : 54
Total: 120
A boy was asked to multiply a number by 12. By mistake he multiplied the number by 21 and got his answer 63 more than the correct answer. The number to be multiplied was
7
9
8
12
Validate
Solution:
(1) Let required number be x.
According to the question,
21x – 12x = 63
⇒ 9x = 63
⇒ x
=
63
9
= 7
© examsnet.com
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