The sum of X and Y's age is 105. When X was Y's age, she was 1.5 times Y's age then what are their present ages?

If x = 1 – q and y = 2q + 1, then for what value of q, x is  equal to y?

If k – 7 = 7 (1 – k), then what is the value of k?

If r varies directly as n and r/m = 10, then what is the value of r when m = 2.2?

[148-{28-58}]≥(?)

Simplify the expression (1+i)⁶+(1+i)⁴ .

6(3 – x) –5 (2x – 4) = 4(3x–) + 14
In the above equation the value of x is:

The number of solutions of x² - 5|x| + 6 = 0 is

If α, β are the roots of (x –√ 3) (x –√ 5) =√ 7, the roots of (x –α) (x –β) +√ 7= 0 are

Solve the simultaneous inequalities: 13x + 4 < 5x +20 andl2x+5>9x + 14.