Mathematics
If ax - by = a^2 + b^2 and (x - y)/2 =a , then the value of x - y is : 1. a 2. 2a 3. b 4. 2b
Related Questions
Assertion(A): A pair of linear equations in two variables cannot have more than one solution.
Reason(R): If we solve a pair of linear equations in two variables, first by elimination method and then by cross multiplication method, then in some cases the two solutions so obtained may be different.
A is true, R is false
A is false, R is true
Both A and R are true
Both A and R are false
If 0.4x + 0.3y = 2.3 and 2.5x - 2y = -5, then the value of xy is :
10
12
2.4
1.2
A shopkeeper sold a table and a chair for ₹ 1,050, thereby making a profit of 10% on the table and 25% on the chair. If he had taken a profit of 25% on the table and 10% on the chair, then he would have got ₹ 1,065. What is the cost price of 1 table and 1 chair.