Question
A wholesaler has 3500 kg of maize. He sells some at 28%
profit and the remaining at 16% profit. The overall profit is 22%. Find the quantity (in kg) sold at 16% profit.Solution
Let the quantity of maize sold at 28% profit be n kg.
Then, the quantity sold at 16% profit = 3500 - n kg.

Thus, the quantity of maize sold at 16% profit = 3500 - 1750 = 1750 kg.
If sec A + tan A = 3 and sec A - tan A = (1/3), find the value of cos A.
In a right triangle ABC, angle B = 90°. If tan A = 3/4 and the length of the hypotenuse is 25 cm, find the area of the triangle.

- Find the value of sin²10° + sin²80° + cos²15° + cos²75°.
If A lies in the first quadrant and 6 tan A = 5, then the value of 8 sin A−4 cos A / cos A+2 sin A is :
Find the value of tan(75°) using the identity for tan(A+B).

If tanθ = x then find the value of cos 2θ?
Simplify:
8sin 27° sec 63° + 3cot 64° cot 26°