Answer:
288
Step-by-step explanation:
Hope it helps :>
b and d/ a and c
m<PQS = m<SQR
4y - 10 = 2y + 10
2y = 20
y = 10
m<PQR = m<PQS + m<SQR
= 4y - 10 + 2y + 10
= 6y
= 6•10
= 60
