<s>[INST] When I was four, my sister was half my age. Now I am 28, how old is my sister? [/INST] If you were 4 years old and your sister was half your age then she would have been 4/2 = 2 years old. Now if you are 28 years old, she would be 28-26 = 2 years younger than you, so she would be 28-2 = 26 years old.</s>\ <s>[INST] This seems overly complex, can you please repeat that but without any calculations. [/INST] 