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Travis bought $9.45 worth of 49-cent stamps and 21-cent stamps. The number of 21-cent stamps was 5 fewer than the number of 49-cent stamps. Solve the equation 0.49s+0.21(s−5)=9.45 for s to find the number of 49-cent stamps Travis bought.

Respuesta :

Answer:

15 49-cent stamps

Step-by-step explanation:

We can solve this problem with the equations 0.49(x) + 0.21(y) = 9.45 and x - 5 = y. Well, 0.49(15) + 0.21(10) = 9.45, so we know that there are 15 49-cent stamps and 10 21-cent stamps. The question is asking for the number of 49-cent stamps, so we can tell Travis bought 15 49-cent stamps.

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The number of 49-cent stamps that Travis bought given the equation is 15.

What he number of 49-cent stamps Travis bought?

Given this equation: 0.49s+0.21(s−5)=9.45 take the following steps to determine the value of s

  1. Expand the bracket: 0.49s + 0.21s - 1.05 = 9.45
  2. Combine similar terms : 0.49s + 0.21s = 9.45 + 1.05
  3. Add similar terms: 10.50 = 0.70s
  4. Divide both sides of the equation by 0.70: s = 15

To learn more about mathematical equations, please check: https://brainly.com/question/26427570

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