Whakaoti i te 80div(1+20%)

$$80 \div (1+20 \% )$$

Aromātai

$$\frac{200}{3}\approx 66.666666667$$

Ngā Upane Otinga

Whakahekea te hautanga \frac{20}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 20.

$$\frac{80}{1+\frac{1}{5}}$$

Me tahuri te 1 ki te hautau \frac{5}{5}.

$$\frac{80}{\frac{5}{5}+\frac{1}{5}}$$

Tā te mea he rite te tauraro o \frac{5}{5} me \frac{1}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{80}{\frac{5+1}{5}}$$

Tāpirihia te 5 ki te 1, ka 6.

$$\frac{80}{\frac{6}{5}}$$

Whakawehe 80 ki te \frac{6}{5} mā te whakarea 80 ki te tau huripoki o \frac{6}{5}.

$$80\times \frac{5}{6}$$

Tuhia te 80\times \frac{5}{6} hei hautanga kotahi.

$$\frac{80\times 5}{6}$$

Whakareatia te 80 ki te 5, ka 400.

$$\frac{400}{6}$$

Whakahekea te hautanga \frac{400}{6} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{200}{3}$$

Tauwehe

$$\frac{2 ^ {3} \cdot 5 ^ {2}}{3} = 66\frac{2}{3} = 66.66666666666667$$