Advertisements
Advertisements
Question
If A: B = `(1)/(4) : (1)/(5)` and B : C = `(1)/(7) : (1)/(6)`, find A : B : C.
Advertisements
Solution
A: B = `(1)/(4) : (1)/(5)`
B : C = `(1)/(7) : (1)/(6)`
LCM of B's terms 4 and 6 = 12
Making terms of B's; as 12
`"A"/"B" = (5 xx 3)/(4 xx 3) = (15)/(12)` = 15 : 12
`"B"/"C" = (6 xx 2)/(7 xx 2) = (12)/(14)` = 12 : 14
∴ A : B : C = 15 : 12 : 14.
APPEARS IN
RELATED QUESTIONS
There are 36 members in a student council in a school and the ratio of the number of boys to the number of girls is 3 : 1. How any more girls should be added to the council so that the ratio of the number of boys to the number of girls may be 9 : 5?
Find the ratio of the following in the simplest fcrm:
a4 + b4 and a3 - b3
If b is the mean proportion between a and c, show that:
`("a"^4 + "a"^2"b"^2 + "b"^4)/("b"^4 + "b"^2"c"^2 +"c"^4) = "a"^2/"c"^2`
Find the fourth proportional of `1/3, 2/5` and 8.4.
Find the third proportional of `1/7 "and" 3/14`
In the example below, find the ratio of the first number to the second.
52, 65
If (3x + 1) : (5x + 3) is the triplicate ratio of 3 : 4, find the value of x.
Find the value of x when 36 : x : : x : 16.
The ratio of 10 kg to 100 kg is 1 : 10
The earth rotates 360° about its axis in about 24 hours. By how much degree will it rotate in 2 hours?
