Question

(c)
Fill in the blank:- 30,40______
and 60 are in proportion​

Answer 1

Answer:

50 is right answer

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

let the blank be x

So, the question is

30:40: : x:60

product of extremes = product of means

30×60=40 × x

1800 =40×x

1800÷40=x

45=x

so, x=45

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