Question

What must be added to the terms of the ratio 3 : 7 to make it equal to 3 : 4.
a) 7
b) 9
c)
15
d)​

Answer 1

Answer:

(B) 9

Step-by-step explanation:

Just put it and see for yourself.

Answer 2

Answer:  b . 9

Step-by-step explanation:

let the number be x

(3 + x) / (7 + x) = 3/4

4 ( 3 + x )        = 3 ( 7 + x )

12 + 4x    = 21 + 3x

-3x + 4x  = 21 - 12

x             = 9

So , the number added to the terms be = 9

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