Model Paper - Rrb (Non-Technical Posts Asm/goods Guards) Worksheet With Answers Page 12
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16Model Paper – RRB (Non-technical posts ASM/Goods Guards)
31. Option D
26. Option B
Total age increased
= (8 × 2)
Use the formula as given below:
years = 16 years
4 men + 24 boys can do it in
days
Sum of ages of two new men
= (21 + 23 +
×
16) years = 60 years
For 50 × 0.9 times great, they can do in
×
×
So average age of two new men = [
] years
50 = 612 days
= 30 years
27. Option B
32. Option C
7 + 3 √ 5 (7 ⎯ 3 √ 5 ) = (7) ⎯ ( 3 √ 5) = √ 49 ⎯ 45
= √ 4 = 2
Total age of 4 members, 10 years ago
= (24
× 4) = 96 years
Total age of 4 members now
= (96
+ 10 × 4) years = 136 years
28. Option B
Total age of 6 members now
= (24
× 6) = 144 years
Let √ 0.0169 × x = 1.3
Sum of the ages of 2 children
=
Then, 0.0169x = (1.3) = 1.69
(144 - 136) = 8 years
.
Let the age of the younger child be x years.
.
x =
= 100
Then, age of the elder child = (x + 2) years
So,
x + x + 2 = 8
2x = 6
29. Option B
x = 3
= > √ 81 + √ 0.81 = 10.09 - x
So, age of younger child = 3 years
= > 9 + 0.9 = 10.09 - x
33. Option C
= > x = 10.09 - 9.9 = 0.19
31 × 31 - 30 × 30 = 61 years
30. Option A
3600 = 2 × 5 × 3 × 2
34. Option C
To make it a perfect cube it must be divided
by
5 × 3 × 2 = 450
Let the present ages of the man and his wife
be 4x and 3x years respectively.
Page 12
Then,
=
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