Asked by dan
a purse contains 26 coins, some of which are dimes and the rest are nickels. Altogether, the coins are worth more than $2.10. At least how many dimes are in the purse?
Answers
Answered by
PsyDAG
Let x = # dimes and y = # of nickels.
x + y = 26
y = 26-x
10x + 5y = 210
Substitute 26-x for y in second equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation.
x + y = 26
y = 26-x
10x + 5y = 210
Substitute 26-x for y in second equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation.
Answered by
Riya
at least 17
Answered by
E
at least 16
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