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MATHEMATICS FORMULA SHEET
U M
T K
A N
IS H
A N CA Nishant Kumar
C
, R
Stay updated with the latest FREE lectures: https://www.youtube.com/@ekagrataca
A
U M
T K
A N
IS H
A N
C CA NISHANT KUMAR 1
,Chapter 1 – Ratio, Proportion,
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Indices, Logarithms U M
T K
A N
IS H
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C CA NISHANT KUMAR 2
, Topic 1 – Ratio
1. Ratio exists only between quantities of same kind.
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2. Quantities to be compared must be in the same units.
U M
3. If a quantity increases or decreases in the ratio a : b, then new quantity =
K
b of the original quantity/a.
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A N
4. Inverse Ratio – The inverse ratio of a/b is b/a.
IS H
5. Compound Ratio – The multiplication of two or more ratios is called compound
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ratio. The compound ratio of a : b and c : d is ac : bd.
C CA NISHANT KUMAR 3
MATHEMATICS FORMULA SHEET
U M
T K
A N
IS H
A N CA Nishant Kumar
C
, R
Stay updated with the latest FREE lectures: https://www.youtube.com/@ekagrataca
A
U M
T K
A N
IS H
A N
C CA NISHANT KUMAR 1
,Chapter 1 – Ratio, Proportion,
A R
Indices, Logarithms U M
T K
A N
IS H
A N
C CA NISHANT KUMAR 2
, Topic 1 – Ratio
1. Ratio exists only between quantities of same kind.
A R
2. Quantities to be compared must be in the same units.
U M
3. If a quantity increases or decreases in the ratio a : b, then new quantity =
K
b of the original quantity/a.
T
A N
4. Inverse Ratio – The inverse ratio of a/b is b/a.
IS H
5. Compound Ratio – The multiplication of two or more ratios is called compound
A N
ratio. The compound ratio of a : b and c : d is ac : bd.
C CA NISHANT KUMAR 3
