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Byju's Answer
Standard VIII
Chemistry
Characteristics of Chemical Reaction
Frame and sol...
Question
Frame and solve the equations for the following statements:
A number decreased by
5
% of it is
3800
. What is the number?
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Solution
Let the number be
x
.
Then,
x
−
5
100
x
=
3800
⇒
x
−
x
20
=
3800
⇒
19
x
20
=
3800
⇒
x
=
3800
×
20
19
=
4000
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