Which of the following is NOT proportional?
A)4/10 = 6/15
B) 2/1 = 30/15
C) 5/25 = 4/24
D) 63/90= 70/100
C. because
5/25 = 1/5, while 4/24 = 1/6
Thanks
To determine which of the following is not proportional, we need to check if the ratios on both sides of the equal sign are equal.
Let's go through each option:
A) 4/10 = 6/15
To check if this is proportional, we cross-multiply:
4 * 15 = 6 * 10
60 = 60
Since the cross-products are equal, option A is proportional.
B) 2/1 = 30/15
Again, we cross-multiply:
2 * 15 = 30 * 1
30 = 30
Option B is proportional.
C) 5/25 = 4/24
Once again, we cross-multiply:
5 * 24 = 4 * 25
120 = 100
The cross-products are not equal. Therefore, option C is not proportional.
D) 63/90 = 70/100
Cross-multiplying:
63 * 100 = 70 * 90
6300 = 6300
So, option D is proportional.
In summary, the option that is NOT proportional is C) 5/25 = 4/24.