Question

Which pair of ratios form a proportion?

A.
2 : 3 and 3 : 4

B.
8 : 12 and 16 : 20

C.
4 : 7 and 12 : 21

D.
9 : 15 and 10 : 16

Answer 1

Can you help me please?

Answer 2

Assuming you have:
A:B and C:D

Multiply A x D
Multiply B x C

If the answers are the same, then the ratios are the same proportion.

A 2:3 and 3:4
2 x 4 = 8
3 x 3 = 9
Nope

B. 8:12 and 16:20
8 x 20 = 160
12 x 16 = 192
Nope

C. 4:7 and 12:21
4 x 21 = 84
7 x 12 = 84
Yes

D. 9:15 and 10:16
9 x 16 = 144
15 x 10 = 150
Nope

Answer 3

Thanks!

Answer 4

Hope that helps ;P

Answer 5

Yes it does! Thanks :)

Answer 6

Your Welcome :]

Answer 7

I passed my test on 100% mastered :)

Answer 8

Thats Great !!! ;P

Answer 9

:)

Answer 10

Nice pic ;)

Answer 11

Thanks ;P