RRB NTPC Mains or Stage 2 Model Paper 9 with solutions

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Question : 31 of 120

Marks: +1, -0

If

a/3= b /4=c/7

, then

{a+ b +c} /c

is equal to:

7
2
$1/ 2$
$1 /7$

Solution:

(b) Let a/

3=b/ 4 =c/7 = k

.
a = 3k, b = 4k, c = 7k

∴{a+b+c} /c⇒{3k+ 4 k+7k }/{7 k} ={14k}/{7k}=2/1\;or\;2:1

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