Question
After offering a discount of 28 percent on the sale of
an item, a seller made a profit of 12.5 percent. If the cost price of the item was Rs. y. What was the marked price of the item?Solution
MP/CP = (100 + P%)/(100 - D%) MP/y = (100 + 12.5)/(100 - 28) MP/y = 112.5/72 MP = 1.5625y
If x + y + z = 4, xyz = 6 & x2 + y2 + z2 = 8 then find the value of x3 + y3 + z3.
If the ratio of the areas of two triangles is 4:3 and the ratio of their heights is 3:4, then the ratio of the lengths of their bases will be

(123×123×123 + 130×130×130)/(123×123 - 123×130 + 130×130) = ?
Find the value of
(1 - `1/(p+1)` ) + (1 - `2/(p+1)` ) + (1 - `3/(p+1)` ) + ........................... + (1 - `p/(p+1)` )
If x² + x = 11
find (x+4)³ +1/((x+4)³)

If x² + px + q = 0 has roots 4 and -3, find the values of p and q.
If (x² + 1)/x = 3, what is the value of (x¹² + 1)/x ⁶ ?
If x = 19, then the value of x5 - 20x4 + 20x3 - 20x2 + 20x - 1 is