 
<translate> John mefuru $20 x 1 / 5 = $4 n'ihe oriri. O nwere $20 - $4 = $16 fọdụrụ. O mefuru $16 x 3 / 4 = $12 n'ihe ndị dị ya mkpa. N'ihi ya, John ka nwere $16 - $12 = $4. Azịza ikpeazụ ya bụ: 4. <eng> John spent $20 x 1 / 5 = $4 on snacks. He had $20 - $4 = $16 remaining. He spent $16 x 3 / 4 = $12 on his necessities. So, John is left with $16 - $12 = $4. The final answer: 4. 