Please answer when a whole number is rounded to the nearest ten the answer is 340

a write down the smallest possible value for the number

b write down the largest possible value for the number

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct