Respuesta :

Data are

Number of coins N = 43

then

Pennies + Dimes + Quarters = P+D+Q = 43

also ,writing in cents

3.34• 10 = 1•P + 10•D + 25•Q

then

334 = P + 10D + 25Q

Number of pennies = dimes, P=D

Then write now

P + P + Q = 43

and

P + 10P + Q = 334

Then now solving , for P and Q

2P + Q = 43

11P +Q = 334

Solve by substitution

Substitute Q= 43 - 2P

Then

11P + (43 - 2P) = 334

11P - 2P = 334 - 43

9P = 291

. P = 291/9

. P = 32.3

Now find Q = 43 - 2P

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