RRB Group D 15-Oct-2018 Shift 1 Solved Paper

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Question : 46 of 84

Marks: +1, -0

Two numbers are in the ratio of

3: 5,

but if each is increased by

10,

the ratio becomes 5 : 7. The numbers are :

10,30
35,49
20,22
15,25

Solution:

Let two numbers

=3 x: 5 x

If each increased by 10 ,

{3 x+10}/{5 x+10}={5}/{7}

21 x+70=25 x+50

4 x=20

x={20}/{4}=5

\∴

Numbers are

3 \× 5\ \&\ 5 \×5

=15 \ \&\ 25

.

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