an optometrist charges $ 150 per pair for soft contact lenses and $ 85 per pair for hard contact lenses . last week she sold 5 more pairs of soft lenses than hard lenses . if her total sales for pairs of contact lenses last week were $ 1455 , what was the total number of pairs of contact lenses that she sold ?
n0 = 150.0
n1 = 85.0
n2 = 5.0
n3 = 1455.0
t0 = n0 + n1
t1 = 100.0 * 4.0
t2 = n2 * 10.0
t3 = n0 * n2
t4 = t1 + t2
t5 = n2 + t4
t6 = t5 + 1000.0
t7 = t6 - t3
t8 = t7 / t0
t9 = t8 * 2.0
answer = n2 + t9
print(answer)