The present average age of ‘A’ and ‘B’ is 10 years, present average age of ‘A’ and ‘C’ is 6 years and present average age of ‘B’ and ‘C’ is 12 years. Find the present age of ‘A’
According to the question, Present ages of (A + B) = 10 × 2 = 20…. (1) Than, the Present ages of (A + C) = 6 × 2 = 12…. (2) Than, the Present ages of (B + C) = 12 × 2 = 24….. (3) Therefore From equations (1), (2) and (3), we get Present ages of (A + B + C) = (20 + 12 + 24)/2 = 28 years Therefore From equation (3)we will get the, present age of ‘A’ = 28 – 24 = 4 years
If (x²+y²+z²)/(xy+yz+zx) = 1
Find (x+y)/z + (y+z)/x + (z+x)/y
In Δ ABC, ∠ B= 68° and ∠ C 32°. Sides AB and AC are produced to points D and E, respectively. The bisectors of ∠ DBC and...
If a = 901, b= 903, and c= 906, then find the value of a³ + b³ +c³ –3abc?
If polynomial P(x) = x3 - 3x2 + 5x-3 is divided by polynomial G (x) = x2 - 2, the quotient and remainder are:
Find the value of ‘x’ in the given expression:
(49/16)x× (64/343)x-1= 4/7
If (x+1/x)2 = 3 Then the value of
x96 + x66 + x42 + x18 + x12 + 1 is
Atul has Rs.500 with him. He invested 30% of the amount at 5% p.a. for 6 years and rest at 20% p.a. for 4 years. Find the sum of simple interests receiv...
If x = (2+√3)/(2-√3), y = (2-√3)/(2+√3). Then find out the value of (x²+y²-xy)/(x²+y²+xy)?
The graphs of the equations 3x-20y-2=0 and 11x-5y +61=0 intersect at P(a,b). What is the value of (a² + b² − ab)/(a² − b²...
