 
<translate> Ken na iya yin sit-ups 20 ba tare da tsayawa ba. Nathan zai iya yin sau biyu, kuma Bob zai iya yin rabin adadin da Ken da Nathan suka haɗa. Bob zai iya yin sit-ups nawa idan aka kwatanta da Ken? Amsar ita ce 10 <eng> Ken can do 20 sit-ups without stopping. Nathan can do twice as many, and Bob can do half the number of Ken and Nathan's combined sit-ups. How many more sit-ups can Bob do compared to Ken?
The answer is 10 