Justin is exchanging dollars for rolls of quarters and rolls of dimes at a bank. each roll of quarters has a value of $10 and each roll of dimes has a value of $5. he exchanges $90 and receives 11 rolls of coins. how many of each type of roll of coins did he receive?

Justin got 7 rolls of quarters and 4 rolls of dimes.

Step-by-step explanation:

Let the roll of quarters be x

Let the rolls of dimes be y

As total money received is $90, the equation becomes;

   .....(1)

And he got 11 roll of coins, so equation becomes;

or    .... (2)

Substituting the value of x from (2) in (1)

So, y = 4

As

So,

x = 7

Hence, Justin got 7 rolls of quarters and 4 rolls of dimes.

28

step-by-step explanation:

because that's the answer