Asked by mary
Bill has 30 coins, some nickels some dimes. They equal $2.10. How many nickels are there? What is the equasion used to solve this problem?
Let d=# dimes.
let n=# nickels.
d + n = 30
d($.10) + n($.05) = $2.10
Two equations and two unknowns. Solve them simultaneously.
Let d=# dimes.
let n=# nickels.
d + n = 30
d($.10) + n($.05) = $2.10
Two equations and two unknowns. Solve them simultaneously.
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