Help please.......Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.
1 answer:
<u>Answer: </u>
The cost of 1 dozen doughnut is $6 and the cost of a dozen croissant is $10. <u>Step-by-step explanation: </u>
<u>We know that:</u>
D = Cost of a dozen doughnut C = Cost of a dozen croissant 10D + 7C = 130 6D + 4C = 76 <u>Work:</u>
6D + 4C = 76
7(6D + 4C = 76)
42D + 28C = 532
40D - 42D = 520 - 532 => -2D = -12 => 2D = 12 => D = 6 <u>Now, let's substitute the value of D into the first equation.</u>
10D + 7C = 130 => 10(6) + 7C = 130 => 60 + 7C = 130 => 7C = 70 => C = 10 Hence,<u> the cost of 1 dozen doughnut is $6 and the cost of a dozen croissant is $10.</u>
Hoped this helped.
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