2/3 = 12/x

Question

A)x= 18
B)x= 12
C)x= 36**************
D)x= 8

22 miles/ 55 hours = 12 miles / H hours
A 48
B 30
C 45**************
D 22

6/11 = 84/x
A) x=40
B) x=120*********
C) x=254
D) x=154

Answer 1

clearly not C, since 12/36 = 1/3

12 is about 1/2 of 22, so you' expect the answer to be about half of 55. So, not 45.

In fact, doing the actual math

22/55 = 12/H
22H = 12*55
H = 12*55/22 = (2*6*11*5)/(2*11) = 6*5 = 30

6/11 = 84/x
6x = 11*84
x = 154

Answer 2

Am I right? I think I am just checking if I am :-)

Answer 3

2 x = 3*12
x = 3*6
x = 18

=========================
22 H = 12 * 55
H = 30

=======================
6 x = 11 * 84
x = 154

Answer 4

NO, you did them wrong !
A/B = C/x
is the same as

A x = B C
or

x = BC/A

Answer 5

Thank you. You guys helped

Answer 6

I hope, practice that !

Answer 7

I will :-)