28 men can complete a piece of work in 15 days and 15 women can completed the same piece of work in 24 days. What is the respective ratio between the amount of work done by 30 men in 1 day and the amount of work done by 18 women in 1 days? 

The factors of  $$ x^2-2x-15 $$ are: 

The smallest 4- digit number which is a perfect square is 

A milkman buys some milk at 50Rs / ltr. He adds 1 / 5 water in milk and sells the mixture at 50Rs / ltr. Find out profit %? 

In a 100 m race, Kamal defeats Bimal by 5 seconds. If the speed of Kamal is 18 kmph, then the speed of Bimal is 

Arun bought an old computer and spent ₹110 on its repairs. He then sold it to Bhola at a profit of 20%. Bhola sold it to Chandan at a loss of 10%. Chandan finally sold it for ₹1,188 at a profit of 10%. How much did Arun buy the computer for?

Ajay spends 25% of his salary on house rent, 5% on food grains, 15% on travel and 10% on clothes and saves 27000, what is Ajay's monthly income?

The point P(a, b) is first reflected in origin to P1 and P1 is reflected in Y-axis to (4, -3). What are the coordinates of point P?