SOLUTION: Hello , could you please help me in how to solve these 3 word problems ? These are examples I need to study, and I can't grasp how to solve them. Thank you so much for your time.

Question 378079: Hello , could you please help me in how to solve these 3 word problems ? These are examples I need to study, and I can't grasp how to solve them. Thank you so much for your time.
1) Jason had to submit five animation projects as per his syllabus in the final semesters. He scored 88, 72, 85, and 76 points out of 100 in four projects. What should be his score in the fifth project so that the average of all the projects is at least 83?

2) The perimeter of a swimming pool is 92m. The width is 4m more than half the length of the pool. Find the length and width of the pool.

3) An aluminum plate is made according to the following dimensions. The outer radius is 9 inches and the inner radius is 3 inches. (See diagram below) Use  = 3.14 as an approximate value. (a) How many square inches in area is the aluminum plate (the shaded region)? (b) If the cost to construct the plate is $6.50 per square inch, what is the construction cost? (A = ∏ r2 )

Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
BIG TIP: Post one question at a time or else no will reply. Which of the questions here would you like to me answer?

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