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Rosa Bought some place mats costing $17.16 and some napkin ring’s costing $10.36.If there were 4 place mats and 4 napkin ring’s what was the total cost for 1 place mat and 1 napkin ring?


Brian is trying to lose at least 2 pounds a week by eating less and walking 2 miles each day. For the past 3 weeks,he lost 2.4 pounds,1.9,and 3.2 pounds. what was the average number of pounds he lost?


Can someone answer these?

Respuesta :

sqdancefan

9514 1404 393

Answer:

  1. $6.88
  2. 2.5 pounds

Step-by-step explanation:

1. In this case, it appears that "some" means "4". The total cost of 4 place mats and 4 napkin rings is apparently ...

  $17.16 +10.36 = $27.52

Then the total cost of 1 of each is 1/4 this amount, or ...

  $27.52/4 = $6.88

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2. The average of three numbers is their sum, divided by 3.

  (2.4 + 1.9 + 3.2)/3 = 7.5/3 = 2.5

Brian lost an average of 2.5 pounds per week.

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