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Answered by
0
Answer:
option c
Step-by-step explanation:
let's take a=5k, b=3k
so
3a+2b =3*5k +2*3k= 15k+6k=21k
3a-2b = 15k-6k =9k
so ratio = 21k/9k = 7/3
Answered by
1
Answer:
let a=5x and b=3x
now (3a + 2b )= 3(5x)+2(3x)
=15x + 6x
21x
similarly simplifying other part we get
=15x - 6x
=9x
now their ratio will be
21x: 9x
(x will be canceled )
21:9
(canceling common factors)
we get
7:3
hence option c is correct
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