RRB Group D Model Paper 9 with solutions

Question : 36 of 100

Marks: +1, -0

If 18, x and 50 are in continued proportion, then the value of x is

Solution:

(1) Since, 18, x and 50 are in continued proportion,

18/x=x/50

⇒

x^2

= 15 x 50 = 900
⇒ x =

√900

= 30

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