# SOLUTION: A rock and a half rock weigh a pound and a half. The rock and the half rock weigh the same. How much would half the whole rock and the whole of the half rock weigh? a 2 1/2 b 1

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 Click here to see ALL problems on Miscellaneous Word Problems Question 284723: A rock and a half rock weigh a pound and a half. The rock and the half rock weigh the same. How much would half the whole rock and the whole of the half rock weigh? a 2 1/2 b 1 1/8 c 1 7/2 d 2 1/4 e None of these. Found 2 solutions by Alan3354, richwmiller:Answer by Alan3354(30993)   (Show Source): You can put this solution on YOUR website!A rock and a half rock weigh a pound and a half. The rock and the half rock weigh the same. How much would half the whole rock and the whole of the half rock weigh? a 2 1/2 b 1 1/8 c 1 7/2 d 2 1/4 e None of these. ---------------- The rock and 1/2 rock weigh 3/4 pounds each. Adding 1/2 a rock increased the total by 3/8 pounds 1.5 + 3/8 = 1 7/8 pounds None of those, unless there's a typo in C Answer by richwmiller(9143)   (Show Source): You can put this solution on YOUR website!let x= whole rock y/2=half rock x+y/2=1.5=3/2 we are told that the whole rock and the half rock weight the same x=y/2 x=3/2*1/2=3/4 y/2=3/4 y=6/4=3/2 half the whole rock =3/8 the whole of half rock =3/4 3/8+3/4= 3/8+6/8= 9/8= 1 1/8 answer b 1 1/8 we are not adding half of the whole rock but removing it. we are removing 3/8 so instead of 3/4+3/4 we have 3/8 +3/4