#### IBPS RRB CWE Exam Quantitative Aptitude Study Material

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b) 40 years

c) 36 years

d) 32 years

b) 18,21,24

c) 30,35,40

d) 12,14,16

b) 2.4

c) 3

d) 1.5

b) 15 yrs

c) 13 years

d) 7 years

and age of Balan = 44 years

Age of Devan = 37 years

Reqd. difference = 55 - 37

= 18 years

b) 60 years

c) 64years

d) 72years

Therefore Father`s present age = 3x years

After 15 years, 3x+ 15=2(x +15)

==>3x+ 15= 2x +30 ⇒x = 30 - 15 = 15

So Sum of their present ages =x+3x=4x

=4 × 15 = 60 years

b) 24 years

c) 30 years

d) 40 years

b) 32

c) 35

d) 30

His wife + two children =48 years

Therefore, Ram -Wife =3 years

⇒ 33- wife =3 years

Therefore wife =33-3 = 30 years

b) 50 years

c) 40 years

d) 60 years

According to question, (8x+18)/(13x+18) = 5/7

=> 56x+18*7 = 65x+18 *5

=> 65x-56x =18*7 - 18*5

=> 9x=18*2

x=4

Hence, the present age of A

=> 8*4+18 =50years.

b) 7 : 11

c) 3:07

d) 8:09

Therefore after 10 years,

x+x+8+20=2(x+x+8)

2x+28=4x+16

4x-2x=28-16

2x=12 ⇒x=12/2 =6

Therefore required ratio

=6:(6+8) = 6:14 =3:7

b) 10

c) 12

d) 16

= 2x years. X`s age = (2x + 4) y

ears. (2x + 4) + 2x + x = 34

5x = 30

x = 6

Hence, X`s age = 2x + 4 = 2 x 6 + 4 = 16 years.