There are total 4.32 dollars in quarters and pennies.
Let the pennies be x and quarters be y.
It is given that he has two times as many pennies as he does quarters.
[tex]x=2y[/tex]The equation formed is
[tex]x+y=4.32[/tex][tex]2y+y=4.32[/tex][tex]3y=4.32[/tex][tex]y=1.44[/tex]The value of x is x=2y therefore
[tex]x=2\times1.44=2.88[/tex]Hence the quarters coin he has is 1.44 dollar and pennies coins he has is 2.88 dollar.
