Martha bought several pencils. If each pencil was either a 23-cent pencil or a 21-cent pencil, how many 23-cent pencil did martha buy?
(1). Marth bought a total of 6 pencils
(2). The total value of the pencils Marth bought was 130 cents.
x + y = 6 - insufficient
.23(x) + .21(y) = 1.30 cents
We could very well choose C but the actual answer could be found just using plug in in B.
I choose B, wait for you to concur. Thanks
GMAT the final frontie!!!.