Answer: See explanation
Step-by-step explanation:
To express the ratios in its simplest form, we've to find the common factor of the numbers given and them reduce them to their lowest term.
(a) 15:12
The common factor to 15 and 12 is 3. Therefore, we will divide the numbers given by 3. This will be:
15/12 = (15/3) / (12/3) = 5/4 = 5:4
(b) 42:18
The common factor to 42 and 18 is 6. Therefore, we will divide the numbers given by 6. This will be:
42/18 = (42/6) / (18/6) = 7/3 = 7:3
Find the value of "x" in the following 2:x :: 4:6
This will be:
2/x = 4/6
Cross Multiply
4 × x = 2 × 6
4x = 12
Divide both side by 4.
4x/4 = 12/4
x = 3