Show two ways to make 0.75$ without using a half dollar or pennies

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

How do you solving the solution of each system using elimination?

Nikolas calculated the volume of the prism. his work is shown below.