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jolli1 [7]
3 years ago
8

The simple interest on a sum of money invested for 6 months at 5% per annum is $1680. Find the amount of money invested

Mathematics
1 answer:
olga55 [171]3 years ago
3 0

9514 1404 393

Answer:

  $67,200

Step-by-step explanation:

The amount if interest is given by the formula ...

 I = Prt

where P is the amount invested, r is the annual rate, and t is the number of years. Here, we want to find P when r = 0.05 and t = 1/2 such that I = 1680.

  P = I/(rt) = $1680/(0.05·0.5) = $1680/0.025

  P = $67,200

The amount invested was $67,200.

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Possible dimension of a box with a volume of 100 cubic cm
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Surface area:
10 x 10 x 1 dimensions: 
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240 sq. cm * $0.05 / 100 sq.cm = $0.12 per box
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10 x 5 x 2 dimension
10 x 5 = 50 x 2 = 100 sq. cm
10 x 2 = 20 x 2 = 40 sq. cm
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5 x 5 x 4 dimension
5 x 5 = 25 x 2 = 50 sq. cm
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