Question

A girl has 5 more than twice as many pennies as she has dimes. Altogether she has $3.05. How many coins does she have? WORTH 18 POINTS

Answer 1

Explanation:

Pennies (0.01): 2x + 5

Dimes (0.10): x

Answer: There are 55 pennies and 25 dimes

Answer 2

Pennies (0.01): 2x + 5

Dimes (0.10): x

Pennies + Dimes = Total

0.01(2x + 5) + 0.10(x) = 3.05

0.02x + 0.05 + 0.10x = 3.05

0.05 + 0.12x = 3.05

0.12x = 3.00

x = 25

Pennies: 2x + 5 = 2(25) + 5 = 50 + 5 = 55

Answer: 25 dimes + 55 pennies = 80 total coins