Question

what least number is to be subtracted from each term of the ratio 13:11 to make it 3:5​

Answer 1

Answer:

8

Step-by-step explanation:

let the number to be substracted be x.

then, (13-x):(11-x)=3:5

(13-x)/(11-x)= 3/5

13-x=3/5×(11-x)

13-x=(33-x)/5

13=[(33-x)/5]+x

13=(33+4x)/5

13×5=33+4x

65=33+4x

4x= 65-33(reversed)

4x=32

x=8

therefore, 8 should be substracted form ratio 13:11 to make it 3:5