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Word problem help please?
Can someone guide me through these problems please. Thanks
1. A certain medicine has a dosage rate of 22.5 milligrams of medicine per kilogram of body weight. What is the dosage for a 2-yr old boy, weighing 15 kilograms? Round answer to 3 significant digits.
2. In the process of performing a front-end alignment, one wheel was measured 0.026 inches out of alignment. The other side was found to be 0.037 inches out in the opposite direction. What is the total misalignment?
3. The small animal cage, has four sides and a top, all of the same size, made of wire "bars." If the bars are spaced 0.4 inches on center, how many bars will be needed to make this cage? Note: Do not include the corners because they are a different material. (The cage is 14 by 14 inches)
4. Certain books cost $12.35 each. If the books come packed 48 per box and 50 per pallet, what is the total value of these books?
Answer:
1)
Given: Med.A = 22.5 mg/kg of body weight
Weight of the boy = 15kg
Required: dosage for the boy (mg) = X
Solution: You need to get the ratio
22.5 mg/1kg = X / 15kg
then you cross-multiply it...getting the result
x (1kg) = 22.5mg (15kg)
x = 22.5mg (15)
Answer: x = 337.5 mg
2)
0.037 - 0.026 = 0.011 total misalignment
3)
14 inches / 0.4 inch = 35 / 5 sides (4 side + 1 top) = 7 bars
4)
$ 12.35 each book; there are 48 books in a box; $ 50 / pallet
$ 50 / 48 books = $ 1.04167 then add to the value of the book $ 12.35
$ 12.35 + $ 1.04167 = $ 13.39167
Golf Survival Guide to Golf: Alignment with Marc Spencer