Net income of a store consists of book selling revenues minus book selling cost and operation costs. Net income of book selling?
1) Book selling cost is 8/15 of revenues and operation cost is 2/15 of revenues.
2) Net income is twice as much as book selling cost and operating cost.
I don't understand the questions, but still I would choose D.
From the qn we get NI = R - (S+O), where NI = NEt Income, R=Revenue,S=Sell Cost ,O=Op. cost.
from stmt 1 we get S=8/15R, O=2/15R, substituting this in qn we get
NI = R - (8/15R+2/15R)
= R - (10/15R) = R/3
From stmt2 we get NI = 2(S+0), subst in qn we get
NI = R - NI/2
NI = 2R/3