SOLUTION: The ratio of a to b is 7 to 9. What's the ratio of (a+2) to (b+2)? A)9:11 B)7:9 C)4:5 D)1:2 E) cannot be determined

Algebra ->  Finance -> SOLUTION: The ratio of a to b is 7 to 9. What's the ratio of (a+2) to (b+2)? A)9:11 B)7:9 C)4:5 D)1:2 E) cannot be determined       Log On


   



Question 1014870: The ratio of a to b is 7 to 9. What's the ratio of (a+2) to (b+2)?
A)9:11
B)7:9
C)4:5
D)1:2
E) cannot be determined

Found 2 solutions by Boreal, MathTherapy:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
It can't be determined.
If it is truly 7:9, it would be A if there were 16 items involved.
But a ratio of 70:90 is 7:9, and adding 2 to each does not make a 9:11 ration but a 72:92 ratio.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

The ratio of a to b is 7 to 9. What's the ratio of (a+2) to (b+2)?
A)9:11
B)7:9
C)4:5
D)1:2
E) cannot be determined
a%2Fb+=+7%2F9. Therefore, %28a+%2B+2%29%2F%28b+%2B+2%29+=+%287+%2B+2%29%2F%289+%2B+2%29 = highlight_green%289%2F11%29 (CHOICE A)