Question

In what ratio should we reduce 100to obtain 80?​

Answer 1

Answer:

20 : 1

Step-by-step explanation:

100 - X= 80

X = 100 - 80

X = 20..

we need in ratio so....divide by ..1..

then, it will be...20/1 (or)

20:1.... that is...

100 - 20/1 = 80..

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Answer 2

Answer:

5:4

Step-by-step explanation:

Please go through the attached image for the explanation.