Ask Question
22 June, 05:16

Jacy has a collection of 140 coins worth $19.00. She has only nickels, dimes, and quarters. The difference in the number of dimes and the number of quarters is 10. Using matrices, how many nickels are in Jacy's collection? 38 50 95 130

+1
Answers (1)
  1. 22 June, 06:15
    0
    Let the number of dimes be x and that of nickels be (x-10). To calculate the number of dimes and nickel in $19 we shall proceed as follows;

    1 dime=$0.1

    1 quarter=$ 0.25

    thus forming the equations:

    x + (x-10) = 140 ... i

    0.1x+0.25y=19 ... ii

    from (i)

    2x-10=140

    2x=140+10

    2x=150

    x=150/2=75

    We conclude that Jacy has 75 dimes and 65 nickels
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Jacy has a collection of 140 coins worth $19.00. She has only nickels, dimes, and quarters. The difference in the number of dimes and the ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers