QUESTION: 1

Given that one Tunnel Boring machine could build 1,000 m of tunnel a month and the Tunnel is 50 km long, how fast could the Tunnel have been built using two Tunnel Boring machines if there had been no delays?

just over 2 years
just under 5 years
about 1 year
just over 4 years

Answer(s): A

Explanation:

In one month, 2,000 m or 2 km of tunnel could be built with 2 machines.
2 km / 1 month = 50 km/x;
2x = 50;
x = 25 months, or just over 2 years.

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QUESTION: 2

If Sara can read 15 pages in 10 minutes, how long will it take her to read 45 pages?

20 minutes
30 minutes
50 minutes
40 minutes

Answer(s): B

Explanation:

The relationship can be expressed as:
15/10 = 45/x;
15x = 450;
x = 30.

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QUESTION: 3

Restaurant customers tip their server only 8 percent for poor service. If their tip was $3.70, how much was their bill?

$46.25
$44.60
$40.15
$50.45

Answer(s): A

Explanation:

The total amount of the bill is:
3.70/x = 8/100;
370 = 8x;
x = $46.25.

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QUESTION: 4

If Leonard bought 2 packs of batteries for x amount of dollars, how many packs of batteries could he purchase for $5.00 at the same rate?

10/x
2x
2/x
10x

Answer(s): A

Explanation:

First set the relationship up and solve for the number of packs:
x/2 = 5/packs;
x(packs) = 10;
packs = 10/x.

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