Answer:
81 is d answer
Step-by-step explanation:
x = 9y
= > 9y + y = 90 substitution
= > y = 9
x =9y = 81 degree
22,500+4%+4%+4%+4%
answer =26,381.82
135
15/100 × 900 = 15 × 9 = 135
84.5-19.7= 67.8
67.8÷6= 11.3
11.3 yards per curtain