# Quantitative Aptitude: Simplification Questions Set 65

Directions(1-5): What will come in place of question mark “?” in the following expressions.

1. {{(3528/21)/7}/4}+6^2+(144)^1/2
48
50
62
54
44
Option D
{{(3528/21)/7}/4}+6^2+(144)^1/2
=> ? = { {168/7}/4}+36 + 12 =>? = {24/4} + 48 => ? = 54

2. 16% of 400 – 15% of 300 =20% of ?
85
80
75
95
90
Option D
16% of 400 – 15% of 300 =20% of ?
=> 0.20*? = 0.16*400 – 0.15*300
=> 0.20*? = 64 – 45
=> ? = 95

3. 126/7 + 9^2 – 20% of 320 = ? * 5
7
9
5
8
6
Option A
126/7 + 9^2 – 20% of 320 = ? * 5
=> ?*5 = 18 + 81 – 0.20 * 320
=> ? * 5 = 99 – 64
=> ? = 7

4. 12*15 + ? – 11 * 13 = 20* 16
255
274
283
295
281
Option C
12*15 + ? – 11 * 13 = 20* 16
=> 180 + ? = 143 + 320
=> 37 + ? = 320
=> ? = 283

5. 88+79+?^2 – 93 = 11*12+23
10
9
11
8
5
Option B
88+79+?^2 – 93 = 11*12+23
=> 167+ ?^2 – 93 = 132 + 23
=> 74 + ?^2 = 155
=> ? = 9

6. 648 / 9 + 18^2 – 20% of 630 = ? *6
30
35
40
49
45
Option E
648 / 9 + 18^2 – 20% of 630 = ? *6
=> ? * 6 = 72 + 324 – 0.20 *630
=>? * 6 = 396 – 126
=> ? = 45

7. 15*18 + ? – 9 * 11 = 12*13
-16
-17
-18
-12
-15
Option E
15*18 + ? – 9 * 11 = 12*13
=> 270 + ? – 99 = 156
=> ? + 171 = 156
=> ? = -15

8. 16% of 1750 – 20% of 1150 = 25% of ?
184
200
190
185
199
Option B
16% of 1750 – 20% of 1150 = 25% of ?
=> 0.25 * ? = 0.16*1750 – 0.20*1150
=> 0.25 * ? = 280 – 230
=> ? = 200

9. {[(3072 /16) /8} /4 ] + 14^2 = ?
192
190
202
174
185
Option C
{[(3072 /16) /8} /4 ] + 14^2 = ?
=> ? = [{192/8}/4] + 196
=>? = [24/4] + 196
=>? = 202

10. 244 – 156 + ?^2 – 13^2 = 15*14 + 25*22
18
22
30
15
29
Option E
244 – 156 + ?^2 – 13^2 = 15*14 + 25*22
=> 88 + ?^2 – 169 = 210 + 550
=> ?^2 – 81 = 760
=> ? = 29

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