Question #e8b19

2 Answers
Mar 15, 2017

9.759.75

Explanation:

0.39xx25=9.750.39×25=9.75

Mar 15, 2017

9 3/4934

Explanation:

color(blue)("Preamble")Preamble

The symbol % is a bit like a unit of measurement but one that is worth 1/1001100

so 39%" is the same as "39xx1/100=39/10039% is the same as 39×1100=39100

In the same way that (as an example)

40/100 =40xx1/100 = 40 xx% = 40%40100=40×1100=40×%=40%

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color(blue)("Answering the question")Answering the question

39% of 25 is the same as 39/100xx2539100×25

You can write this as 39xx25/10039×25100

but 25/10025100 is the same as 1/414 giving:

39xx1/4" "=" " 39/4" " =" " 9 3/439×14 = 394 = 934