Question

warms and the numbers b and c are called middle terms or means. So, when four non-zero numbers a, b,
/ and 30 in
rectangle
Length and breadth of a rectangular field is 5:3. If the breadth of rectangle is 60 m, find the length of the
The ratio of income to the savings of a family is 13: 4. Find the expenditure if the saving is 2700.
There are 35 teachers in
equivalent (or equal), they are said to form a proportion. Thus, proportion says that two
dos (or fractions) are equal. A proportion is an equation written in the form
for quantities are said to be in proportion, if the ratio of the first and the second quantities is equal to the
o of the third and the fourth quantities. The symbol '=' or ':' is used to equate the two ratios.
ta:b is equal to c :d, then a, b, c, d are in proportion. We write a : b::c:d or a : b = cid.
four non-zero numbers a, b, c, d are said to be in proportion if the ratio a :b and c:d are equal that is
between 1 and 30 with
2700
a school of 2100 students. Find the ratio of the number of teachers to the number of
13
s = 40
422700
Y=
а с
b d
I
students.
400
ROPORTION
ratios are
mo
6
3
---
5
10
por example,
2010
==
= bc. This is known as cross product rule. The numbers a and d are called extreme
that is if ad
= bc that is product of extremes = product of means. This property can be used to
est for proportionally without bringing the two ratios in the lowest form.
dare in proportion ad
4 12
Cone
-
are in proportion.​

Answer 1

Answer:

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Step-by-step explanation:

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