8. A photograph of a bacteria enlarged 1,00,000 times attains a length of 4 cm. What is
the actual length of the bacteria? If the photograph is enlarged 25000 times only, what
would be it's enlarged length.
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A photograph of a bacteria enlarged 1,00,000 times attains a length of 4 cm. What is the actual length of the bacteria? If would be its enlarged length? the photograph is enlarged 25000 times only, what
Mathematics
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Maya Rege
Grade 10
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Let the actual length
of bacteria be x cm and the enlarged length of bacteria be y
cm, if the photograph is enlarged for 20,000 times.
The given information
in the form of a table is as follows.
Length of bacteria (in cm)
5
x
y
Number of times photograph of
Bacteria was enlarged
50000
1
20000
The number of times the
photograph of bacteria was enlarged and the length of bacteria are in
direct proportion.
Therefore, we obtain
Hence, the actual
length of bacteria is 10â4 cm.
Let the length of
bacteria when the photograph of bacteria is enlarged 20, 000 times be
y.
Hence, the enlarged
length of bacteria is 2 cm.
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