RRB Group D 1-Dec-2013 Shift 1 Solved Paper

Question : 43 of 100

Marks: +1, -0

A number whose double is 45 greater than its half is_________.

Solution:

Let the number be x.
According to the question

2 x-\;{x}/{2}=45

⇒ 3 x=90

⇒ x=30

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