Pennies used to be made of copper and zinc and had a mass of 3.1g today pennies are made of copper plated zinc and have a mass of 2.5 g. a new pennies mass is what percent of an old pennies mass?

Can someone me i’m confused. will give brainliest and a whole bunch of points

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

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?