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# PS- Annual Income

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28 Aug 2006, 13:56
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Last edited by lan583 on 11 Feb 2007, 08:55, edited 1 time in total.
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28 Aug 2006, 14:21

Area of smaller triangle = 1/2 * 4 * 4 = 8
Area of larger triangle = 1/2 * 12 * 12 = 72

Hence ratio is 1:9 or 1/9
Manager
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28 Aug 2006, 14:25
Q1. (a) 1/9

The ratio of the two triangle's areas is

1/2 * 4 * 4 divided by 1/2 * 12 * 12

= 1/3 * 1/3 = 1/9.

-------------------------------------------------

Q2. (c) 50 + I/40

The income tax formula can be calculated as follows:

0.02 I + (100+0.01I)/2

This Simplies to 100/2 + 0.05I/2

= 50 + I/40 (multiplying num and den by 100)

MG
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31 Aug 2006, 22:59
gmatornot wrote:

Area of smaller triangle = 1/2 * 4 * 4 = 8
Area of larger triangle = 1/2 * 12 * 12 = 72

Hence ratio is 1:9 or 1/9

Same: 1/9

What if it were a three dimentional prism?? what would be the ratio of the volume of the smaller prism to that of the larger? Not 1/9, right?
31 Aug 2006, 22:59
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