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
Solve for x 2x:25 = 6:(x/3) Read More »
Mathematics MCQs / Q&A, MCQs / Q&A2x:25 = 6:(x/3)
Mathematics MCQs / Q&A
2x:25 = 6:(x/3)
(i). a2 – 7a + 12 = 0, (ii). b2 – 3b + 2 = 0 to solve both the equations to find the values of a and b?
(ii). b2 – 3b + 2 = 0 to solve both the equations to find the values of a and 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
I. x2 – x – 42 = 0, II. y2 – 17y + 72 = 0 to solve both the equations to find the values of x and y?
II. y2 – 17y + 72 = 0 to solve both the equations to find the values of x and 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. x2 – 7x + 6x – 42 = 0
=> (x – 7)(x + 6) = 0 => x = 7, -6
II. y2 – 8y – 9y + 72 = 0
=> (y – 8)(y – 9) = 0 => y = 8, 9
=> x < y
Who is Called the Father of Calculus?
A. Al-Khwarizmi
B. Aristotle
C. Herodotus
D. Isaac Newton(Correct)
Who is Called the Father of Calculus? Read More »
Mathematics MCQs / Q&A, MCQs / Q&AMasood purchased a plot for Rs. 8,000. He sells the plot to Aftab at a profit of 20%. Aftab in turn sells that plot to Zahid at a loss of 20%. The plot costs Zahid ?
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