A dishonest dealer marks up the price of an article by 15% and gave a discount of 20%. He also uses 900gm instead of 1000gm. Find his profit percent.

A shopkeeper marked an article 75% above the cost price and sold it after a discount of 50%. Find the cost price of the article if he had a loss of Rs. 156.

A starts a business, after 6 months B also join him with Rs.4500 and after 2 months of B’s joining C also join them with Rs.4500. If A gets approx. Rs 4900 out of total annual profit of Rs. 10,000 then find the approximate value of initial investment of A.

Ram has 5 daughters. The average age of these 5 sisters is 28 years. The youngest one is 16 years old. What was the average age of the 4 daughters before the youngest one was born?

Ratio between speed of boat in still water to speed of stream is 7 : 2. If 126 km is travelled downstream in 3.5 hours then find the difference between speed of boat in still water to speed of stream(in kmph)?

Direction : What value should come in the place of question mark (?) in the following questions?

$$ \sqrt{1089} + 3=(?)^2 $$

The base of an isosceles triangle is 6 cm and its perimeter is 16 cm. Its area is 

If cos θ = $${1\over \sqrt{10}}$$, then tan θ is equal to.