Ankita's weight is 20% less than that of her grandmother. The grandmother weighs 26 kg less than grandmother's husband, whose weight is 81 kg. If Ankita's brother is 8 kg heavier than Ankita, then what is the weight (in kg) of Ankita's brother ?

52

Weight of her grandmother = 81 - 26

= 55 kg

So, the weight of Ankita = 55 × 80%

= 44 kg

Now,

Weight of her brother = 44 + 8

= 52 kg