Question

Are 30,40,45,60 in proportion.​

Answer 1

Answer:

Yes ,they are in proportion

Step-by-step explanation:

30:40::45:60

30:45::40:60

2:3::2:3

Hence shown

Answer 2

Answer:

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Product of middle terms= product of exterior terms

30×60= 45×40

1800= 1800

Hence they are in proportion