 
<translate> Buru ụzọ chọpụta ngụkọta nke mmega ahụ́ Emmett na-eme: 12 jumping jacks + 8 pushups + 20 situps = 40 mmega ahụ́. Mgbe ahụ, kewaa ọnụ ọgụgụ nke mmegharị ahụ site na ngụkọta nke mmega ahụ ma mụbaa site na 100% iji gosipụta azịza ya dị ka pasent: 8 mmegharị ahụ / 40 mmega ahụ * 100% = 20%. Azịza ya bụ: 20. <eng> First find the total number of exercises Emmett does: 12 jumping jacks + 8 pushups + 20 situps = 40 exercises. Then divide the number of pushups by the total number of exercises and multiply by 100% to express the answer as a percentage: 8 pushups / 40 exercises * 100% = 20%.
The answer: 20. 