Question

A purse contains 21 coins consisting of nickels and dimes. Find the number of coins of each kind if the total value is $1.65.

If 5n represents the value of the nickels, then which of the following expressions represents the value of the dimes?

Answer 1

1.65=5n+10d
21=n+d

Answer 2

\[n+d=21\]
\[10d+5n=170\]
\[From (1),d=21-n\]
Substitute into 2 and solve for n then d.

Answer 3

its not 170 its 1.65 @Agl202

Answer 4

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Answer 5

Thx for correcting me my bad