TE MMUAE NO ASEƆkwan bɛn so na wobu eyi?
Woyi ntewmu no fi mu ansa. Afei wɔde adetɔn tow kɔ bo a wɔatew so no so.
Adetɔn bo fomulaAdetɔn bo = bo a edi kan × (1 − ntewmu ÷ 100)
Nhwɛso a mfaso wɔ so
Ntewmu 20% wɔ $129 so ma wokora $25.80. Ansa na tow aba so no, adetɔn bo yɛ $103.20.