Algebra Test Set 3
Question 1:
The ratio of male rat to female rat in a biology laboratory is 4:3. If the biology Lab has 63 rat, what is the difference between the number of male rat and the number of female rat?
A:
7
B:
9
C:
11
D:
13
E:
15
Question 2:
A:
x = 3 and y = -5/2
B:
x = 3 and y = 5/2
C:
x = -3 and y = -5/2
D:
x = -3 and y = -5
E:
x = 3 and y = -5
Question 3:
The difference between twice the first number and second number is five. The sum of first number and three times second number is 6, find the two numbers.
A:
x = 5 and y = 5
B:
x = 9 and y = 13
C:
x = 2 and y = -1
D:
x = 3 and y = 1
E:
x = 6 and y = 7
Question 4:
How many gallon of water need to mix with 25 gallon of salt water that has 16% of salt to get a mixture that is 10% salt water?
A:
35
B:
30
C:
25
D:
20
E:
15
Question 5:
The area of a rectangular is 180 square feet. If the perimeter is 54 feet, what is the dimensions of the rectanglar?
A:
20 by 90
B:
10 by 18
C:
12 by 15
D:
30 by 6
E:
45 by 4