3x – 4y + 70z = 0, 2x + 3y -10z = 0, x + 2y + 3z = 13
Solve for x and y : x - 3y = 0, x + 2y = 20
Question is mentioned below :
The age of a person is twice the sum of the ages of his two sons and five years ago his age was thrice the sum of their ages. Find his present age.
The solution of the set of equations 3x + 4y = 7, 4x – y = 3 is
Question is mentioned below :
A number between 10 and 100 is five times the sum of its digits. If 9 be added to it the digits are reversed find the number.
1.5x + 2.4 y = 1.8, 2.5(x + 1) = 7y have solutions as
Find the fraction which is equal to 1/2 when both its numerator and denominator are increased by 2. It is equal to 3/4 when both are increased by 12.
Monthly incomes of two persons are in the ratio 4 : 5 and their monthly expenses are in the ratio 7 : 9 If each saves ₹. 50 per month find their monthly incomes.