 <translate> 20 daga 50 marbles ne fari haka akwai 50 - 20 = 30 ja da kuma blue marbles. Adadin jan marbles da shudi marbles iri daya ne, don haka akwai 30 / 2 = 15 na kowane launi. Bambanci tsakanin adadin farin marbles da blue marbles ne 20 - 15 = 5. Sau biyu bambanci shine 5 * 2 = 10 marbles. Ana cire marbles 10 don barin 50 - 10 = 40 marbles. Amsar ita ce 40. <ibo> 20 nke 50 marbles na-acha ọcha otú e nwere 50 - 20 = 30 red na-acha anụnụ anụnụ marbles. Ọnụ ọgụgụ marbles na-acha uhie uhie na marbles na-acha anụnụ anụnụ bụ otu, ya mere, e nwere 30 / 2 = 15 nke agba ọ bụla. Ihe dị iche n'agbata ọnụ ọgụgụ nke bọl na-acha ọcha na bọl na-acha anụnụ anụnụ bụ 20 - 15 = 5. Ugboro abụọ nke ihe dị iche bụ 5 * 2 = 10 marbles. A na-ewepụ 10 marbles iji hapụ 50 - 10 = 40 marbles. Ya mere azịza ya bụ 40. 