Question
A sofa of MRP 1500 is available in Rs.300 cash down
payment and 9 monthly equal installment of Rs.150 each. Find the rate of interest per annum.Solution
Total interest = 300 + 150 x 9 – 1500 = Rs. 150 150 = (1200 + 1050 + 900 + 750 + 600 +…. + 150) x R x 1/ (12 x 100) 150 = 5400 x R/1200 100 = 3R R = 100/3 % = 33.33%
Solve the quadratic equations and determine the relation between x and y:
Equation 1: x² - 24x + 143 = 0
Equation 2: y² - 26y + 165 = 0
If x^2 - 7x + k = 0 has roots that are equal, what is the value of k?
In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answer Â
I. 7x² - 19x + 10 = 0...
Equation 1: x² + 16x + 63 = 0
Equation 2: y² + 10y + 21 = 0
How many values of x and y satisfy the equation 2x + 4y = 8 & 3x + 6y = 10.
I. 3y2 + 16y + 16 = 0
II. 2x2 + 19x + 45 = 0
I. 14p2 – 135p + 81 = 0
II. 7q2 – 65q + 18 = 0
I. 35x² - 51x + 18 = 0
II. 30y² + 17y – 21 = 0
I. p2Â - 53p + 672 = 0
II. q2Â - 27q + 126Â = 0
I. 10x² - 11x + 3 = 0
II. 42y² - 23y – 10 = 0
