Darren bought 20 stamps. n of these were 20p stamps. The rest were 30p stamps. He spent £5.20 altogether.
How many 20p stamps did he buy?

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?