Solution

1. (5)
Required ratio = (4 × 180) : (8 × 120) : (3 × 160) = 3 : 4 : 2

2. (2)
Let the total distance be 2D. Now
D = 675
Total distance = 2D = 1350 km

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3. (1)
3A = 4B = 7C
A : B : C = 1/3 : 1/4 : 1/7 = 28 : 21 : 12
C’s share =  = 420

4. (4)
let CP of 200 mangoes =200
SP of 160 mangoes = 200
CP of 160 mangoes =160
Profit % =

5. (1)
Number of ways to arrange vowels = 2!
Number of ways to arrange consonants = 4!
Total Number of arrangements = 2! × 4! = 48

6. (1)
Let the numerator and denominator be 3x and 5x respectively. Now x = 5.
Required sum = 3x + 5x = 8x = 40

7. (1)

8. (4)

9. (1)
Third Number = 64 + (64 – 59) × 2 + (64 – 63) × 2 = 76
Or  64*5- 59*2-63*2=76

10. (3)
Let the incomes of A and B be 5x and 4x respectively. Now x = 600.
Income of A = 5x = 3000

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