If two complementary angles are in the ratio of 2:3. find the ratio of square of smaller angle to square of greater?

Five women can do a work in thirty six days. If the ratio between the capacity of a man and a woman is 3:1, then find how many days it will take 5 men to complete the same work?

The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The  observation is

A sum of Rs. 2000 at 40% per annum compounded annually. Calculate the interest for the third year at compound interest.

When Vijay sells 12 pens, he gains the selling price of pens. Calculate his % profit?

A wholesaler sold a water purifier at a loss of 40%. If the selling price has been increased by Its. 125, then wholesaler will get the profit of 10%. What was the cost price of the purifier?

The product of the ages of Swati and Aparna is 120. If thrice the age of Aparna is more than Swati's age by 2 years, fund the age of Swati.

If the angles of a triangle are in the ratio of 2:3:7, then find the ratio of the greatest angle to the smallest angle.