She spent 10 minutes. 25% x 40 = 10.
3(y+10) = 3(3). For additional simplification, the answer may be written as
y+10 = 3
Answer:
x = 53.5
Step-by-step explanation:
x is one half the difference of the intercepted arcs, that is
x = 0.5(137 - 30) = 0.5 × 107 = 53.5
