annethelusma25
23.11.2021 •
Mathematics
Help. What is 90% decreased by 10% :/
Is it 81?
Solved
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Ответ:
New value =
90 - Percentage decrease =
90 - (10% × 90) =
90 - 10% × 90 =
(1 - 10%) × 90 =
(100% - 10%) × 90 =
90% × 90 =
90 ÷ 100 × 90 =
90 × 90 ÷ 100 =
8,100 ÷ 100 =
81
Hope this helps :)
Ответ:
the first statement is a ratio or fractions that are equale