Unkownidn
Answered

Expand your knowledge base with the help of IDNLearn.com's extensive answer archive. Get step-by-step guidance for all your technical questions from our knowledgeable community members.

Jim has a total of 12 coins. Some of them are nickels, and the others are quarters. If he had 12 more nickels, then the value of the nickels would be the same as the value of the quarters. How many quarters does he have?

Let n = the number of nickels and q = the number of quarters.

Which two equations can be used to solve this problem? Select the two that apply.

Sagot :

Luanaidn
[tex]n-\ number\ of\ nickels\\ q-\ number\ of\ quarters\\\\ n+q=12\ \ \ \ | n=12-q\\ 0,05(n+12)=0,25q\\\\ 0,05n+0,6=0,25q\ \ \ | substitute\ n=12-q \\\\ 0,05(12-q)+0,6=0,25q\\\\ 0,6-0,05q+0,6=0,25q\\\\ 1,2-0,05q=0,25q\ \ \ | add\ 0,05q\\\\ 1,2=0,3q\ \ \ | divide\ by\ 1,2\\\\ q=4\\\\ He\ has\ 4\ quarters.[/tex]
We are happy to have you as part of our community. Keep asking, answering, and sharing your insights. Together, we can create a valuable knowledge resource. Your search for solutions ends here at IDNLearn.com. Thank you for visiting, and come back soon for more helpful information.