Quantitative Aptitude: Simplification Questions Set 50

January 26, 2018January 29, 2018 Shubhra

45% of 840 – 65% of 420 – 2 * ? = 43
28

31

35

22

None

Option B
Solution:
45% of 840 – 65% of 420 – 2 * x = 43
378-273-2x=43
105-2x=43
2x=105-43
2x=62
x=31.
[6/4 × 32/8 × 6/16] + [6/16 × 24/8 × 36/4] = ?
83/8

94/5

99/8

99/5

None

Option C
Solution:
[6/4 × 32/8 × 6/16] + [6/16 × 24/8 × 36/4] = x
9/4+81/8=x
x=(18+81)/8
x=99/8.
522/29*10 + 126 = ? + 250
55

58

56

66

None

Option C
Solution:
522/29*10+126= x + 250
180+126-250=x
x=56.
3521 + 320.6 + 1215.35 – 4522.62 + 1455.3 = ?
1877.45

1926.30

1845.33

1989.63

None

Option D
Solution:
3521+320.6+1215.35-4522.62+1455.3=x
6512.25-4522.62=x
x=1989.63.
3/9 of 2520 + 75% of 550 = ?² – 38
36

34

26

44

None

Option A
Solution:
3/9 of 2520 + 75% of 550 = x² – 38
840+418+38=x²
1296=x²
x=36.
[2√392 – 21] + (√8-7)² = ?²
8

6

9

11

None

Option B
Solution:
[2√392 – 21] + (√8-7)² = x²
[2 √49*8 -21] + 8+ 49 -14√8= x²
14√8 -21 +57 -14√8= x²
x²=36
x=6.
(2 5/3 + 4 1/6 + 5 5/6 ) + ? = 13
2/3

1/3

2/5

3/5

None

Option A
Solution:
(2 5/3 + 4 1/6+ 5 5/6 )+ x = 13
11/3+25/6+35/6 +x=13
x=(22+25+35-78)/6
=4/6=2/3.
(8² * 5²)/200√2 = ?
6√2

8√2

8/√2

6/√2

None

Option C
Solution:
(8² * 5²) / 200√2 = x
=(64*25) / 200√2
x=8/√2.
17² – 21² + 13² = ?
17

22

34

28

None

Option A
Solution:
17 ² -21² +13²=x
289 – 441 + 169=x
x=17.
1.6²/0.8² = [2.4²/0.4²] – ?
28

32

36

24

None

Option B
Solution:
1.6²/0.8² = [2.4²/0.4²] – x
(1.6*1.6)/(0.8*0.8) = (2.4*2.4)/(0.4*0.4)-x
4 = 36– x
x=32.