Question

5. What number must be added to each term of the
ratio 9:11, so that it becomes 4 : 5.
(a) 2
(b)-2
(c)-1

please do this answer with explanation​

Answer 1

Answer:

(c) -1

Step-by-step explanation:

(9+x)/(11+x)=4/5

By cross multilying

5*(9+x)=4*(11+x)

45+5x = 44+4x

5x - 4x = 44 - 45

x = -1

Wish that this helped you

Answer 2

Answer:

C)-1

Step-by-step explanation:

9+a/11+a=4/5

45+5a=44+4a

45-44=4a-5a

1=-a

a=-1