Question

(a) If A:B=3:4andB:C=7:6 find out A:B:C
(b) If A:B=2:5 andB:C=7:9 find out A:B:C
(c) If A:B=19:21 and B:C=21:7 find outA:B:C

Answer 1

1. A:B = 3:4

A/B = 3/4

A = B(3/4)

B:C=7:6
C/B=6/7
C=6B/7

A : B : C = B(3/4) : B : B(6/7)
A:B:C = 21/28 : 28/28: 24/28
A:B:C = 21:28:24

2.

A:B =2:5

A/B = 2/5

A = B(2/5)

B:C=7:9
C/B=9/7
C=9B/7
A : B : C = B(2/5) : B : B(9/7)
A:B:C= 14/35 : 35/35 : 45/35
A:B:C = 14:35:45

3.

A:B =19:21

A/B = 19/21

A = B(19/21)

B:C=21:7
C/B=7/21
C=7B/21
A : B : C = B(19/21) : B : B(7/21)

A:B:C = 19:21:7