 
<translate> N'iburu n'uche usoro nke echiche, nye ajụjụ na azịza ezi uche dị na ya. Ihe mere o ji dị otú ahụ: Nathan nwere ike ime 20 x 2 = 40 nọdụ ala. Ọnụ ọgụgụ Ken na Nathan jikọtara ọnụ bụ 20 + 40 = 60 sit-ups. Bob pụrụ ime 60 / 2 = 30 sit-ups. Bob nwere ike ime 30 - 20 = 10 sit-ups karịa Ken.  Ajụjụ na azịza: <eng> Given the stream of consciousness rationale, provide a reasonable question and answer. Rationale: Nathan can do 20 x 2 = 40 sit ups. Ken and Nathan's combined number is 20 + 40 = 60 sit - ups. Bob can do 60 / 2 = 30 sit - ups. Bob can do 30 - 20 = 10 more sit - ups than Ken.
 The question and answer: 