All of them I need help please

1 answer:

NemiM [27]2 years ago

7 0

19.

2568.75 - 2500 = 68.75;

( ? / 100 ) * 2500 = 68.75 ;

? * 25 = 68.75;

? = 68.75 ÷ 25

? = 2.75;

r = 2.75 %

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