Question

Which of the following ratios are in proportion:
a) 5, 25, 6, 30 (b) 15, 40, 3,8(c)8,15,5,9​

Answer 1

Answer:

(a) and (b)

Step-by-step explanation:

To find if two ratios are in proportion, we simplify them

1. 5:25 :: 6 : 30

—» 1:5 :: 1 : 5

Hence, it is in proportion

2. 15: 40 :: 3 : 8

—» 3 : 8 :: 3 :8

Hence,it is in proportion

3. 8 : 15 :: 5 : 9

It cannot be simplified further as there are no common factors

It is not in proportion

Answer 2

Answer:A-25,30,5,6

   Sum of means    =30 X 5=150

   Sum of extremes=25 X 6=150

Step-by-step explanation:

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