a:b=1:2 b:c=1:3 find a:b:c=?
a:b=1:2
b:c=1:3 multiple with 2
So b:c =2:6
Therefore a:b:c= 1:2:6
a:b=2:5 b:c=2:3 find a:b:c=?
a:b=2:5 multiple with 2
b:c=2:3 multiple with 5
a:b=4:10
So b:c =10:15
Therefore a:b:c= 4:10:15..
State whether the given statements are true or false:
(a) 12 : 18 = 28 : 56
(b) 25 persons : 130 persons = 15kg : 78kg
Solution: (a) False, Because
12:18 = 2:3 (divided from 6)
and
28:56 = 1:2 (divide it from 28)
These are not equal..
Question-The length and breadth of a steel tape are 10m and
2.4cm, respectively. The ratio of the length to the
breadth is.
solution- since 1 miter = 100 cm
therefore 10 m = 1000 cm
so rario of lenth and breadth is l:b = 1000: 2.4 =10000:24 =2500:6 (divided it from 4)
= 1250:3 (divided it from 2)
question :-For a proportion of a: b:: c :d ,
d is the fourth proportional of a, b, c
c is called third proportional to a, b
Mean proportional between a and b is root ab
Invertendo of a/b=c/d. is b/a=d/c
Alternendo of a/b=c/d is a/c=b/d...
A quantity M divided in the ratio of a : b, then each part of the quantity is
I. The first part is M*a/a+b
2 The second part is M*b/a+b
If a : b = x : y and b : c = p : q, then a : b : c = px : py : yq
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