RRB RPF RPSF SI and CONS Model Papers 8 with solutions

Question : 43 of 120

Marks: +1, -0

Of the three numbers whose average is 60, the first is one fourth of the sum of the others. The first number is :

Solution:

(2)

x + y + z = 180

x= {1}/{4}(y+z)

4 x=y+z

5 x=180, ∴ x=36

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