SIMPLIFICATION 6:

1. 45% of 300 + √? = 56% of 750 – 10% of 350
   A. 260
   B. 62500
   C. 230
   D. 52900
   E. None of these
   
   Answer – B. 62500
   Explanation :
   45% of 300 + √x = 56% of 750 – 10% of 350
   135 + √x = 420 – 35 => √x  = 250
   x = 62500
   
   
2. [(?)11/7/50] = [20/(?)10/7]
   A. 3
   B. 5
   C. 10
   D. 20
   E. None of these
   
   Answer – C. 10
   Explanation :
   [(?)11/7/50] = [20/(?)10/7]
   x3 = 1000
   x = 10
   
   
3. 79296 ÷ √x =112*12
   A. 3481
   B. 3561
   C. 3721
   D. 3969
   E. None of these
   
   Answer – A. 3481
   Explanation :
   √x = 79296 / 112*12
   √x = 59
   x = 3481
   
   
4. 1637 + 1832 = (45)² + (?)²
   A. 32
   B. 38
   C. 42
   D. 48
   E. None of these
   
   Answer – B. 38
   Explanation :
   1637 + 1832 = (45)² + (?)²
   (?)² = 3469 – 2025 = 1444 => x = 38
   
   
5. 13498 + 8932 – 1159 = ? * 89
   A. 289
   B. 271
   C. 239
   D. 261
   E. None of these
   
   Answer – C. 239
   Explanation :
   13498 + 8932 – 1159 = ? * 89
   x * 89 = 21271 => x = 239
   
   
6. (37685 + 29452 – 41897) ÷ 250 = ?
   A. 102.56
   B. 118.96
   C. 100.96
   D. 112.76
   E. None of these
   
   Answer –C. 100.96
   Explanation :
   (37685 + 29452 – 41897) ÷ 250
   = 25240 ÷ 250 = 100.96
   
   
7. 75 / ? = ? / 147
   A. 175
   B. 125
   C. 115
   D. 135
   E. None of these
   
   Answer – E. None of these
   Explanation :
   x² = 75 * 147 => x = 105
   
   
8. (32.4 * 8 * 5 + 4) ÷ 26 + 14 = (?)² 
   A. 8
   B. 2
   C. 18
   D. 12
   E. None of these
   
   Answer – A. 8
   Explanation :
   32.4 * 8 * 5 + 4 = 1300
   1300 ÷ 26 + 14 = 64 => x = 8
   
   
9. √(12 * 145 ÷ 6 + 34) = ?
   A. 18
   B. 28
   C. 63
   D. 73
   E. None of these
   
   Answer – A. 18
   Explanation :
   √(12 * 145 ÷ 6 + 34)
   = √(290 + 34)
   = 18
   
   
10. 5670 ÷ (28*13.5) = ? 
    A. 25
    B. 35
    C. 15
    D. 45
    E. None of these
    
    Answer – C. 15
    Explanation :
    5670 ÷ (28*13.5)
    = 5670 ÷ 378 = 15