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Math Revolution GMAT Instructor
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Math Revolution GMAT Instructor
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Re: 79 laboratories raise the bacterium, the laboratory have 48 culture di [#permalink]
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79 laboratories raise the bacterium, the laboratory have 48 culture dishes on average, which has about 25,075 bacteria each. How many bacteria are there approximately?

A. 10^7
B. 10^8
C. 10^9
D. 10^10
E. 10^11


-> Due to approximately, 79=80, 48=50, 25,075=25,000 are derived, which makes (79)(48)(25,075)=(80)(50)(25,000)=10^8. The answer is B.
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Re: 79 laboratories raise the bacterium, the laboratory have 48 culture di [#permalink]
MathRevolution wrote:
79 laboratories raise the bacterium, the laboratory have 48 culture dishes on average, which has about 25,075 bacteria each. How many bacteria are there approximately?

A. 10^7
B. 10^8
C. 10^9
D. 10^10
E. 10^11


* A solution will be posted in two days.

We've to find approx value.
80*50*25000 = 10^8
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Re: 79 laboratories raise the bacterium, the laboratory have 48 culture di [#permalink]
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Re: 79 laboratories raise the bacterium, the laboratory have 48 culture di [#permalink]
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