Problema Solution
Suppose that Maria has 170 coins consisting of pennies, nickels, and dimes. The number of nickels she has is 15 less than twice the number of pennies; the number of dimes she has is 25 less than three times the number of pennies. How many coins of each kind does she have?
Answer provided by our tutors
We can write the following equations form the question:
p+n+d=170
n=2p-15
d=3p-25
Where 'd', 'n', and 'p' stand for the number of dimes, nickels and pennies respectively.
Using Algebrator to solve for 'd','n', and 'p', we get:
d=80
n=55
p=35