The amount of money in a savings account increased from $2,900 to $3,625. What was the percent of increase in the amount of money saved?

Can someone me and plz do the problem

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Can someone me do math because i am having a breakdown rn because i don’t get it