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Tauwehe
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

\frac{200\times 100}{80}
Whakawehe 200 ki te \frac{80}{100} mā te whakarea 200 ki te tau huripoki o \frac{80}{100}.
\frac{20000}{80}
Whakareatia te 200 ki te 100, ka 20000.
250
Whakawehea te 20000 ki te 80, kia riro ko 250.