Given that A: 12 =4: 10, find value of a

Answer 1

To find the value of A, we need to set up a proportion using the given ratio:

12/A = 4/10

Cross multiply to solve for A:

12 * 10 = 4 * A
120 = 4A

Now, divide by 4 to solve for A:

120/4 = A
30 = A

Therefore, the value of A is 30.