Question # 1

1/x=1/y+1/z then 'x' in terms of 'y' and 'z' is given by?

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(y+z) / (y-z)

yz / (y+z)

(y+z)/ yz

1/z-1/y

The average height of five men is 68 inches. If one man is 70 inches tall and three others have an average of 67 inches, the height of the fifth man, in inches, is

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68

69

70

71

In solving an arithmetic example, Donna, by mistake multiplied by 6 instead of dividing by 6. If her anser was 13 1/5, what should be the correct answer to the example ?

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2 8/11

5/66

2 1/5

11/30

What is the sum of money, 6% of which is 18 dollars?

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600

200

300

20

A word processing operator typed 44 words per minute. After practice, the operator's speed increased to 55 words per minutes. By what percent did the operator's speed increase?

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25%

50%

15%

20%

If a pipe can fill a tank in 2 hours and another pipe can fill the same tank in 40 minutes. how much time in minutes is needed to fill the tank if both the pipes are working together?

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90

50

60

30

If 3x+5y=10 and 3y+5x=30 then average if 'x' and 'y' is?

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3/2

4

5/2

7/2

In Myra had bowling scores of b+6, b-2, b+4, and b-5. what must she score in the next game to get overall average of b+2?

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b+7

b-3

b+3

b-7

If p is a negative integer and p²+11p=t, a value of t could be:

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12

18

-18

11

The value of (x+y)² + (x-y)² is?

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4

2(x²+y²)

4xy

-4xy

If abc = 2 and a =c then b=

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a²

1/2a

2/a²

2-a²

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