A group of 18 people ordered soup and sandwiches for lunch. Each person in the group had either one soup or one sandwich. The sa
ndwiches cost $7.75 each and the soups cost $4.50 each. If the total cost of all 18 lunches was $113.50, how many sandwiches were ordered?
1 answer:
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Answer:
x = 0.36
Step-by-step explanation:
5x/3 + 2/5 = 1
5x/3 + 2/5 - 2/5 = 1 - 2/5
5x/3 × 3 = 0.6 × 3
5x = 1.8
5x ÷ 5 = 1.8 ÷ 5
x = 0.36
Answer: 33. r=13.6 34. m=12
Step-by-step explanation:
<em>33.</em>
<em>-0.8+r=12.8</em>
<em>-0.8+r+0.8=12.8+0.8</em>
<em>r=13.6</em>
<em>34.</em>
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<em>Multiply both parts of the equation by -3:</em>
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