Contoh berpikir komputasional dengan 4 pilar kehidupan sehari-hari

x − am o u n t o f d im es y − am o u n t o f q u a r t ers { 0 , 1 x + 0 , 25 y = 3 , 05 ∣ ∗ ( − 10 ) x + y = 20 ​ { − x − 2 , 5 y = − 30 , 5 x + y = 20 ​ + − − − − − A dd i t i o n − 1 , 5 y = − 10 , 5 ∣ d i v i d e b y − 1 , 5 y = 7 x = 13 T h ere a re 7 q u a r t ers an d 13 d im es .

Answered by luana | 2024-06-10

let d = number of dimes, q = number of quarters
Sally has 20 coins in her piggy bank, so d + q = 20
The total amount of money is $3.05. Use the value of each coin multiplied by its number to get total value .10d + .25q = 3.05 multiply everything by 100 to clear the decimal places 10d + 25q = 305 and d + q = 20
solve the second equation above in terms of either d or q - lets do d d = 20 - q sub that into the first equation 10d + 25q = 305 10(20 - q) + 25q = 305 200 - 10q + 25q = 305 15q = 105 q = 105/15 = 7 and from above d = 20 - q = 20 - 7 = 13
so, there are 13 dimes and 7 quarters verify with orig problem 13 + 7 = 20, OK, and $1.30 + $1.75 = $3.05

Answered by Anonymous | 2024-06-24

Sally has 13 dimes and 7 quarters. We found this by setting up two equations based on the total number of coins and their total value. Solving these equations gave us the solution.
;

Answered by Anonymous | 2024-10-01

Jawaban:Dekomposisi, Pengenalan Pola, Abstraksi, Algoritma

Answered by amandamks04 | 2025-07-22