Priam has dimes and pennies in a cup holder in his car. the total value of the coins is $4.21. the number of dimes is three less than four times the number of pennies. how many dimes and how many pennies are in the cup?

There are 41 dimes and 11 pennies in the cup.

Step-by-step explanation:

We know that 1 dime = 0.1 dollars

1 penny = 0.01 dollars

Let p be the number of pennies and d be the number of dimes.

Then we have the following equations :_

Substitute the value of d from (1) in equation (2), we get

Then , Put value of p in (1), we get

Hence, there are 41 dimes and 11 pennies in the cup.