QUESTION: the cost of VERB-ing is the same as FOR VERB-ing

[yongwookl716]

Hello. Instructors!
According to GMAC this sentence is wrong.

WRONG: The cost of building a house is the same as building a car.

(I tried not to use their EXACT phrasing.)

GMAC says FOR should be between same and as.
Which makes,

RIGHT: The cost of building a house is the same as for building a car.


My questions are
1."X is the Same as Y for" and idiom?

2.Or is this an issue of parallelism(comparison), with the parallel Elements being "prepositional phrases" -- of building a house, for building a car.

If it is a matter of parallelism.
Why can't we say,

The cost of A is the same as B. is a parallel marker.

and regard
building a house parallel to building a car

Thankyou

[yongwookl716]

Hello. Instructors!
According to GMAC this sentence is wrong.

WRONG: The cost of building a house is the same as building a car.

(I tried not to use their EXACT phrasing.)

GMAC says FOR should be between same and as.
Which makes,

RIGHT: The cost of building a house is the same as for building a car.


My questions are
1."X is the Same as Y for" and idiom?

2.Or is this an issue of parallelism(comparison), with the parallel Elements being "prepositional phrases" -- of building a house, for building a car.

If it is a matter of parallelism.
Why can't we say,

The cost of A is the same as B. is a parallel marker.

and regard
building a house parallel to building a car

Thankyou

On second thought, I think this sentence is wrong because it is comparing the cost of building a house to just building a car.

Even so, how does adding for make it any less ambiguous?

Please help me

[RonPurewal]

citation?

[yongwookl716]

citation?

OG 13th edition.
Can we not post OG questions?

[RonPurewal]

please read the forum rules before posting!
that question (along with many others) is answered there.

[RonPurewal]

on the other hand, it would be helpful if you could name the edition # and problem # of the item you're asking about. no need to quote it. thanks.