Given that w+x=-4, x+y=25 and y+w=15, what is the average (arithmetic mean) of w,x and y ?

Try to understand the relationship between the two figures below. Now, look at the figure.

If x

A rectangular swimming pool is 15 meter long and 30 meter wide. A deck, with uniform width, surrounds the pool...

A certain suit's price was reduced by 25% in the first week and 20% in next week. In the third week, the shop...

If 150 is increased by 60% and then decreased by x percent the result is 192. What is x ?

If 10 men or 18 women can do a work in 45 days, then how many days would it take 25 men and 15 women to do twi...