Question

(7) 1.5 means % 9) if x : 5 :: 12 : 20 , then x =____
20) 0.2% = ____​

Answer 1

Answer:

Step-by-step explanation:

7) 1.5% = 1.5 / 100 = 15 / (10 × 100) = 3 / 200

9) x : 5 = 12: 20

Product of extremes = Product of means

x × 20 = 5 × 12

x = 5 × 12 / 20

x = 3

Therefore, x = 3.

20) 0.2% = 0.2 / 100 = 2 / (10 × 100)= 1 / 500