Joseph has 213 coins in a jar. All the coins are dimes and quarters.
The value of the coins is $42.15.
How many does he have of each?

the answer I take was 213+42.15=255.15 je have on each

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.