Asked by susana
Stu has $21.40 in dimes and quarters for a totl of 100 coins. How many of each kind of coin does he have?
Answers
Answered by
PsyDAG
d = 100-q
.10d + .25q = 21.40
Substitute 100-q for d in second equation and solve for q. Insert that value into the first equation and solve for d. Check by inserting both values into the second equation.
.10d + .25q = 21.40
Substitute 100-q for d in second equation and solve for q. Insert that value into the first equation and solve for d. Check by inserting both values into the second equation.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.