1. Joy has 3 times as many dimes as nickels. In all she has $1.40, how many coins of each type does she have?
2. Vicki has $2.80 in quarters and dimes. The number of dimes is 7 less than the number of quarters. Find the number she has of each kind.
3. A purse containing $3.20 in quarters and dimes has, in all, 20 coins. Find the number of each kind of coin.
Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
1. To compute the value of dimes and nickels you create a system of equations. Let's assume we have one variable that represents dimes 'd', and one variable for nickels 'n'. Now, we know that the total amount of dimes and nickels is $1.40. We know that a dime is $0.1 and a nickel is $0.05. Now we form the first equation,
And now from the second condition, namely the fact that we have 3 times as many dimes as nickels, we form the equation,
We replace that, in the first equation,
So we have 4 nickels. And from the fact that we have 3 times as many dimes, we compute.
Do the same logic with the other problems. :)