**Solve for x**

2x:25 = 6:(x/3)

2x:25 = 6:(x/3)

A. 18

**B. 15 (Correct)**

C. 12

D. 5

2x/25 = 6/(x/3) 2x/25 = 18/x 2x*x = 18*25 x² = 9*25 x=3*5 x=15

2x:25 = 6:(x/3)

A. 18

**B. 15 (Correct)**

C. 12

D. 5

2x/25 = 6/(x/3) 2x/25 = 18/x 2x*x = 18*25 x² = 9*25 x=3*5 x=15

(ii). b

A. if a < b

B. if a ≤ b

C. if the relationship between a and b cannot be established.

**D. if a > b (Correct)**

Explanation:

I.(a – 3)(a – 4) = 0

=> a = 3, 4

II. (b – 2)(b – 1) = 0

=> b = 1, 2

=> **a > b**

II. y

**A. If x < y (Correct)**

B. If x > y

C. If x ≤ y

D. If x ≥ y

E. If x = y or the relationship between x and y cannot be established.

Explanation:

I. x^{2} – 7x + 6x – 42 = 0

=> (x – 7)(x + 6) = 0 => x = 7, -6

II. y^{2} – 8y – 9y + 72 = 0

=> (y – 8)(y – 9) = 0 => y = 8, 9

=> x < y

A. Al-Khwarizmi

B. Aristotle

C. Herodotus

**D. Isaac Newton(Correct)**

A. Rs. 12,000

B. Rs. 10,000

C. Rs. 8670

**D. Rs. 7680(Correct)**

8000 x 20 / 100 = 1600 (so Masood earns 1600 profit (20%)

Aftab Purchase plot at 8000 + (20% which is 1600 ) = 9600

20% of 9600 = 1920 (Loss of Aftab)

So The plot costs Zahid: 9600 -1920 = **7680**