Answer:
She would have lost 108 pounds of weight within the space of 6 months following the 10% guide
Explanation;
Leah Current weight is 270 pounds,
If she follows the 10% guide of doing healthy exercises and jobs that would make her lose 10% of her weight,
10% of her weight 270 = 27
if she loses 27 pounds of weight every month consistently,
After 6 month, she would have lost = 108 pounds of weight (27 x 6)
I.e she should aim at losing 27 pounds of weight every month.
After six month her weight will be at 162 pounds (i.e 270-108 = 162)