If m∠PQR=(12x−2)∘, and mPR=(20x−10)∘, what is m∠PQR?

Answer 1

the answer choices are:
a. 137.5
b. 70
c. 16
d. 81

Answer 2

you tell us what m∠PQR is, then ask what it is.
and PR is a side, not an angle.

Proofread your post before you submit it.
Anyway, the three angles add up to 180, so just solve for x and then use that to get the measures.

Answer 3

it’s 70