Ngokuba ama -eka ayishumi esivin i ayakuthela ibhati elilodwa , nehomere lembewu liyakuthela i-efa nje.

I-efa nebhati kuyakuba yisilinganiso sinye , ukuze ibhati lifumbathe okweshumi kwehomere, ne-efa okweshumi kwehomere, isilinganiso salo sibe ngokwehomere.

namafutha anqunyiweyo , ibhati lamafutha : inxenye yeshumi yebhati lekhori elingamabhati ayishumi njengehomere , ngokuba amabhati ayishumi ayihomere,