Percentage Word Problem – Помощен център на Кан Академия

Как да помогнем?

Muhammad Rehan

23 юли, 2016 08:40

-2

Saima gets 50% that of her brother. Her brother gets what percent of Saima?

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Коментари: 2

Marc-Antoine Ouimet

23 юли, 2016 16:46
0

Действия по коментара Постоянна връзка
We consider the quantities S (for Saima) and B (her brother).

We know that the ratio of S/B=50%=1/2.

The ratio B/S then equals to 2/1, or 200%.

Mathematically, we're considering the inverse of the ratio.

(S/B)^-1=B/S
P Rossell

14 август, 2016 16:18
0

Действия по коментара Постоянна връзка
You are missing numerous words. Salma is not "getting" a portion or her brother or vice versa.

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