Reasonin Rakesh Yadav

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= 234 39
6
54. (a) Suppose the age of Shyam
(ekuk ';ke dh vk;q )= x years
Age of Ram (jke dh vk;q) = 2x
years
Age of Suresh (lqjs'k dh vk;q) = 4x
years
According to question,
iz'ukuqlkj]
x + 2x + 4x = 70
or, 7x = 70
70
x 10
7
Age of Ram (jke dh vk;q) = 2x = 2
× 10
= 20 years
55. (b) Age of Mahesh (egs'k dh vk;q )
= 60 years
Age of Ram (jke dh vk;q) = 60 – 5
= 55 years
Age of Raju (jktw dh vk;q) = 55 – 4
= 51 years
Age of Babu (ckcw dh vk;) = 51 – 6
= 45 years
Age difference between Mahesh
and Babu (egs'k vkSj ckcw dh vk;q dk
varj) = 60 – 45 = 15 years
56. (d) Suppose, the age of Z (ekuk
Z dh vk;q = x o"kZ) = x years
Age of Y = 2x years
Age of X = 2x + 4 years
According to question
x + 2x + 2x + 4 = 34
5x = 34 – 4
x = 30
5 = 6
Age of X = 2x + 4 = 2 × 6 + 4
= 16 years
57. (b) 4 cats can kill 4 rats in 4
minutes. So, 8 cats can kill 8
rats in 4 minutes.
4 fcfYy;k¡ 4 pwgksa dks 4 feuV esa ekj
ldrh gSaA blfy, 8 fcfYy;k¡ 8 pwgksa dks 4
feuV esa ekjsxhA
58. (d) 40% of 1620 + 30% of 960 =
?% of 5200
?
100 5200
40 30
1620 960
100 100
? × 52 = 648 + 288
? = 936 18%
52
59. (a) There are 130 employees.
(;gk¡ 130 deZpkjh gSA)
60. (b)
Tea
21 22
5
18 20
20
Juice
Coffee
9
21 employees drink only tea.
15 employees do not drink any
beverage.
21 deZpkjh dsoy pk; ihrsa gSaA
15 deZpkjh dksbZ Hkh is; inkFkZ ugha ihrs gS aA
Typing
8 9 12
4
3
3
1
Stenography
Computer
Total number of employees
who know either typing.
Computer or stenography or
two or three jobs.
dqy deZpkfj;ksa dh la[;k tks ;k rks VkbZfiax]
dEI;wVj] LVsuksxzkiQh ;k nksuksa ;k rks rhuksa
tkursa gSA
= 8 + 9 + 12 + 4 + 3 + 1 + 3 = 40
Rakesh Yadav Sir
Number employees who do not
know any of three jobs. (deZpkfj;ksa
dh la[;k tks rhuksa dk;ks± es a ls dksbZ dk;Z ugha
tkursA)
= 50 – 40 = 10
61. (c) 10 years ago (10 o"kZ igys)
John's age (tkWu dh vk;q)
= 42 – 10 = 32 o"kZ
Kelvin's age (dsfYou dh vk;q) = 26
– 10 = 16 o"kZ
;k 32 16
2 o"kZ
62. (b) Age of Mani (euh dh vk;q) = 60
years
Age of Prabhu (izHkq dh vk;q )
= 60 30
2 years
Age of Ramona (jeksuk dh vk;q)
= 30 15
2 years
63. (b) The present age of Hema
(gsek dh orZeku vk;q)
= 40 – 10 = 30 years
Age of Hema 10 years ago (10
o"kZ igys gsek dh vk;q)
= 30 – 10 = 20 years
The age of Geeta 10 years ago
(10 o"kZ igys xhrk dh vk;q)
20
10 years
2
So, the present age of Geeta
(rks] xhrk dh orZeku vk;q)
= 10 + 10 = 20 years.
64. (b) Suppose present age of son
(ekuk iq=k dh orZeku vk;q) = x years
Present age of father (firk dh
orZeku vk;q) = 52 years
According to question,
iz'ukuqlkj]
x + x = 52 years
2x = 52
x = 26 years
Son's age 8 years back (8 o"kZ
igys iq=k dh vk;q)
= 26 – 8 = 18 years
65. (c) Sum of ages of mother,
daughter and son (i.e., 3
person) is 87 years.
ekrk iq=kh vkSj iq=k dh vk;q dk ;ksx 87
o"kZ gSA
Sum of their age after 8 years
(8 o"kZ ckn mudh vk;q dk ;ksx) = 87 +
(8 × 3) = 87 + 24
66. (d)
= 111 years
5 27 3
?
9 25 5
? = 5
27
5
9 25 3
? = 1
67. (c) Total number of shirts (dqy
dehtksa dh la[;k)
= 54 × 28 × 10 × 4 = 60480
Total number of shirts sold
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