Answer:
His calculation is reasonable
Explanation:
12 markers = $5.52 ----------- ( 1 )
estimated cost of each marker = $0.50
calculated ( actual cost ) = $ 0.46
to determine whether his calculation is reasonable
from equation 1 we will calculate the actual cost of each marker
hence ; 1 marker = 5.52 / 12 = $0.46
therefore his estimated cost of each marker which he estimated as $0.50 is reasonable
