Correct option is (A)
Lets say total charge X = 1.06 ( Parts + Labour)
its given parts = 50
so x = 1.06 ( 50 + Labour)
S1: The sales tax on the charge for labor was $9.60
That means labour would been = 160
So S1 is sufficient.
S2: The total sales tax was $12.60.
This statement dosen't provide any information about the distribution of parts & labout in our original euation:
X = 1.06 ( Parts + Labour)
There are multiple answers for S2, so it is insufficient.
Hope that helps.
2) total salex tax 12.60
we know the tax rate 6% and parts cost $50
we can find parts tax $3 from there and subtract from 12.60 which gives 9.60
from 9.60 we can calculate the price 9.60*100/6 =160
both are suff
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