Question

If a : b = 3:4 and b: C = 12:18, find a : c.



please help and give clear explanation ​

Answer 1

Step-by-step explanation:

b:c = 12: 18= 2:3. (divide by 6)

a:b = 3:4 multiply by 2 (bs value in 2nd proportion)

b:c = 2:3. multiply by 4 (b s value in 1st proportion)

• now a:b = 6:8
• b:c = 8:12
• a:b:c= 6:16:12

divide with 2

a:b:c = 3:8:6

for a:c =6:12=1:2

Answer 2

Answer:

1:2

Step-by-step explanation:

a:b =3:4

b:c = 12:18

in both terms , the common is 'b' and both aren't same yet,

a:b=3:4 = 9:12 (multiply and divide by 3 )

so,

a:b=9:12

b:c=12:18

basically

a=9x and c=18x

a:c is 9x:18x ie 1:2

Hope you like it

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