তিতাস গ্যাস কোম্পানী Assistant manager (General) এর নিয়োগ পরীক্ষার প্রশ্ন সমাধান ২০২১ - Titas Gas Exam Question Solution 2021 (TGTDCL)


তিতাস গ্যাস কোম্পানী Assistant manager (General) এর নিয়োগ পরীক্ষার প্রশ্ন সমাধান ২০২১ - Titas Gas Exam Question Solution 2021 (TGTDCL)











Math Part ( Exam Taker IBA)
Solved by Shuvo Sarker Slokh 
============================
46■
D/3 = 3H/5 
=> D5 = 9H 
=> D : H = 9 : 5 
47■■
X/10 - X/12 = 3 
=> 6X - 5X = 60×3 
=> X = 180 
48■■ 
CR => 7 : 3 = 70 : 30 
20% = 5 : 4 = 70 : 56 
40% = 5 : 7 = 30 : 42 
Final [ 100 : 98 ] ie 2% loss 
49■■
S : W => 2 : 3 = 8 : 12
S : W => 1 : 3 = 5 : 15
S : W => 3 : 7 = 6 : 14 
8============5 
  =====6======
1=============2
X % = 1/3 ie 33.33%
50■■  83-63/.5 = 20×10/5 = 40 (Ans)
51■■
CP per kg at 10% => 22×10/11 = 20 
14============ [24]
=======20======
2==============3
Ans ... 24
52■■ AS = 340/5 = 68
60===========80
=======68=====
12============8
=> 3 : 2 .... Ans : 3 hour 
53■■ 
3 year ago = 27×3 = 81 
Now , Sum = 81+9 = 90 
5 year ago = 20×2 = 40 
Now , Sum = 40+10 = 50 
So , Age of Husband = 90-50 = 40 (Ans).
54■■ 320% Profit ie 
CP : P : SP = 100 : 320 : 420 
CP : P : SP = 125 : 295 : 420 [ As CP 25% increase and SP remains same ] 
Required % = 295/420 = 70.23% (Ans)
55■■Let the fixed amount be Tk. X and  the cost of each unit  be TK. Y  Then
540y + X =  1800...........................(i)
and  620y + X =  2040 ............................(ii)
On subtracting (i) from (ii) , we get  80y =  240    => y = 3
putting y = 3 in  (i) , we get;
540 x 3  + x =  1800 
= > (1800 - 1620) =  180.
Fixed charges = TK. 180, Charge per unit  =  TK. 3
Now , Total charges for consuming  500 units =  Tk. (180 + 500 x 3) = Tk. 1680.
56■■ AS = 61/9 
36=============81
=======61=======
20=============25
=> 4 : 5 (TR) 
Distance cover on foot => 4×4 = 16 km (Ans)
57■■ 
X : Y = 2.5 : 1 = 5 : 2 = 10 : 4 
Y : Z = 4 : 1 
So , X : Y : Z = 10 : 4 : 1  
Z = 1800/15 = 120 (Ans)
58■■ 
Let , Total 100 individuals 
A = 20 
B = 60 
None = 20 
A/Q ,(60-20) ie 40 unit = 720 
                           100 unit = 1800 (Ans)
59■■Here , Age of Captain 26 years and Wicketkeeper 29 years.  
Let , Average was X years  
A/Q , 
11X - 55 = 9 (X-1)
=> 11X - 9X = - 9 + 55 
=> 2X = 46 
=> X = 23 [Ans]
60■■ 
=> X^2 - 6X + 8 = 0
=> (X-4)(X-2) = 0 ....... [4×2 = 8 , 4+2 = 6 ]
=> X = 4 & 2 
Ans ... (A)2 < X < 4


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