If (D) is the distance traveled and (R) is the rate of travel, which of the following represents the relationship between D and R for the equation D=2R?
A. D is twice as much as R
B. R is twice as much as D
C. R is two than D
D. D is town more than R
Given the equation D=2R means that the get the value of D, multiply the value of R by 2. That is D is two times the value of R.
Therefore, the Correct Answer is A.
More Questions on TEAS 7 Math
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Q #1: Which of the following measurements is the approximate metric equivalent of 7 inches?
A. 3.2 cm
B. 2.8 cm
C. 15.4 cm
D. 17.8 cm
Answer Explanation
Use the relation 1 inch=2.54 cm to change 7 inches to cm
Thus, 7 inches is about 17.8 cm.
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Q #2: What is the least common denominator for the fractions below? (Round the answer to the nearest integer) 1/2, 2/3, 4/5
A. 30
B. 25
C. 7
D. 19
Answer Explanation
We determine least common denominator (LCD) using prime factorization of denominators as follows
2=1*2
3=1*3
5=1*5
Thus, LCD of 2, 3, 5 = 2*3*5=30
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Q #3: A gumball machine contains red, orange, yellow, green, and blue gumballs. Twenty percent of the gumballs are red, 30% are orange, 5% are yellow, 10% are green, and the rest are blue. If there are a total of 120 gumballs, how many more blue gumballs are there than yellow gumballs?
A. 48
B. 30
C. 42
D. 36
Answer Explanation
Determine the number of blue and yellow gumballs as follows:
Percent of blue gumballs=100%-(20%+30%+5%+10%) =100%-65%=35%
Number of blue gumballs35% of 120=0.55*120 = 42 blue gumballs [35%=35/100=0.35]
Number of yellow gumballs=5% of 120=0.05*120 = 6 yellow gumballs [5%=5/100=0.05]
Difference between the number of blue and yellow gumballs=42-6= 36 balls
Therefore, there are 36 more blue gumballs than yellow gumballs.
