RRB Non Technical Model Papers 7 with solutions

Question : 29 of 100

Marks: +1, -0

75% of a number when added to 75 is equal to that number. What is that number ?

Solution:

(3) Let the number be x.
So, 75% of x + 75 = x
⇒

{75x}/100+75=x⇒ 75 = x –{3x}/4

⇒x/4=75 ∴ x = 300

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