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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?

10n
16n
10(21 - n)

Question

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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?


10n
16n
10(21 - n)

anonymous · Answer

write two linear equations to represent the totals given:
let n = number of nickels in the purse and
let d = number of dimes in the purse

so how many coins total?  use the variables to write an equation for the total number of coins.  go ahead, i'll wait...

anonymous · Answer

Eq. 1 ----n + d = 21 
Eq.2 ----5n + 10d = 165

anonymous · Answer

is it right????????????????????????????

anonymous · Answer

yep now solve

anonymous · Answer

should i solve for n or d